75 : 120 : 132
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75 : 120 :: 132 : 211.2
We have : 75 : 120 : 132 : x
We know Product of Means = Product of Extremes
⇒ 120 × 132 = 75 × x
⇒ 15840 = 75x
⇒ x = 15840/75
⇒ x = 211.2
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22 : 45 : 65 is the correct answer
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