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" Proportional, when the ratio of the first to the second is equal to the ratio of the second to the third. "
Elements of Geometry and Conic Sections - Page 37
by Elias Loomis - 1857 - 226 pages
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ICSE Mathematics Part 2 for Class X

646 pages
...4cd c2+d2 Continued Proportion Quantities of the same kinds are said to be in continued proportion when the ratio of the first to the second is equal to the ratio of the second to the third and is equal to the ratio of the third to the fourth, and so on. Thus, a, b, c, d, ... are in continued...
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Isc Business Mathematics

890 pages
...started. В : PROPORTION 1.4 Definition Four quantities are said to be in proportion or proportional if the ratio of the first to the second is equal to the ratio of the third to the fourth. Thus a, b, c, d are in the proportion or proportional if the ratio of 'a to b...
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