If the numbers~$\frac{17}{24}$~ ,~$\frac{1}{2}$~,~$\frac{3}{8}$~,~$\frac{3}{4}$~and ~$\frac{9}{16}$~ were ordered from greatest to least, the middle number of the resulting sequence would be
~$\frac{17}{24}$~
~$\frac{1}{2}$~
~$\frac{3}{8}$~
~$\frac{3}{4}$~
~$\frac{9}{16}$~
公倍数
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