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" In any proportion, the product of the means is equal to the product of the extremes. "
Elements of Plane Geometry: For the Use of Schools - Page 53
by Nicholas Tillinghast - 1844 - 96 pages
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Basic Math Concepts: For Water and Wastewater Plant Operators

Joanne K. Price - Technology & Engineering - 1991 - 380 pages
...proportion. The inside terms (2nd and 3rd) are called the means of a proportion. For all proportions, the product of the means is equal to the product of the extremes. In other words, when the two inside terms are multiplied, the answer will be the same as when the two...
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How to Prepare for the GMAT

Michael Randall, Morris Bramson, Morton Selub - Business & Economics - 1993 - 428 pages
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Essential Math: Basic Math for Everyday Use

Edward Williams, Robert A. Atkins - Mathematics - 1994 - 388 pages
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Geometry the Easy Way

Lawrence S. Leff - Juvenile Nonfiction - 1997 - 394 pages
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Merriam-Webster's Guide to Everyday Math: A Home and Business Reference

Brian Burrell - Mathematics - 1998 - 386 pages
...or as "/, = '//. The values b and c are referred to as the means; a and d are the extremes. In any proportion, the product of the means is equal to the product of the extremes. (This is also known as cross-multiplication.) THE RULE OF THREE "Do as you would be done by" is thought...
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Schaum's Outline of Basic Mathematics with Applications to Science and ...

Haym Kruglak, John Moore, Ramon Mata-Toledo - Mathematics - 1998 - 508 pages
...of the proportion. The above proportion can be written in fractional form as a/b = c/d. Rule. In any proportion, the product of the means is equal to the product of the extremes. Ratio For instance, 3:4 = 6:8 is a proportion and the product of the means is (4)(6) or 24 and the...
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Preliminary Prealgebra: An Integrated Approach

Richard N. Aufmann, Joanne S. Lockwood - Mathematics - 1998 - 790 pages
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Pharmacological Calculations for Nurses: A Worktext

Peggy H. Batastini, Judy K. Davidson - Drugs - 1999 - 196 pages
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Geometry

Mathematics - 2000 - 186 pages
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HOW TO SOLVE WORD PROBLEMS IN MATHEMATICS (EBOOK)

David S. Wayne - Business & Economics - 2001 - 180 pages
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