# geometry

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Can someone explain how you get the answer b/15.
Given the proportion a/b=8/15, what ratio completes the equivalent proportion a/8=?/?.
I'm not sure if there is an equation or step you use to get the answer.

• geometry -

a/b = 8/15

multiply by b to get

a = 8b/15

divide by 8 to get

a/8 = b/15

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