Question
Verify the following: $108 : 72 :: 129 : 86$

Answer

We have $108 : 72 :: 129 : 86$
Product of means $= 72 \times 129 = 9288$
Product of extremes $= 108 \times 86 = 9288$
Product of means = Product of extremes
Hence $108 : 72 :: 129 : 86$ is verified.

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