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प्रश्न
Find the value of the unknown in the following proportion :
c
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उत्तर
`"a" : 9/2 :: 7/2 : 11/2`
⇒ `"a" xx 11/2 = 9/2 xx 7/2`
⇒ `"a" = 9/2 xx 7/2 xx 2/11`
⇒ `"a" = 63/22`
a = `63/22`
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