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प्रश्न
Find the value of x in each of the following proportions:
55 : 11 : : x : 6
उत्तर
55 : 11 : : x : 6
Product of extremes = Product of means
55 × 6 = 11 × x
⇒ 11x = 330
⇒ x = `330/11` = 30
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