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प्रश्न
Find the value of the unknown in the following proportion :
3 : 4 : : p : 12
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उत्तर
3 : 4 : : p : 12
⇒ 3 x 12 = 4 x p
⇒ p = `(3 xx 12)/4`
⇒ p = 9
p = 9
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