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28 March, 11:54

4-inch by 6-inch what is the width of 15 inches for a ratio table

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  1. 28 March, 12:06
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    This is a ratio problem; the ratio of the length to width is constant (and therefore equal):

    4 / 6 = 15 / x

    Now, with a ratio, we may do any allowable algebra operation: cross-multiply, invert both sides, multiply or divide both sides by the same amount, etc.

    Let's cross-multiply:

    4x = (15) (6)

    x = 90/4

    x = 22.5 in.
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