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If a : b = 2/9 : 1/3, b : c = 2/7 : 5/14...

If `a : b = 2/9 : 1/3, b : c = 2/7 : 5/14` and `d : c = 7/10 :3/5`,then find `a : b : c : d`

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RS AGGARWAL-RATIO AND PROPORTION-All Questions
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