document.write( "Question 790734: The thighbone or femur is the largest bone in the body. About 1/4 of a person`s height is the length of a femur. If a person`s femur measures 19.75 inches, about how many feet tall is the person? \n" ); document.write( "
Algebra.Com's Answer #479266 by shosta(4)\"\" \"About 
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you can set this up as a ratio \r
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\n" ); document.write( "\n" ); document.write( " \"1%2F+4+=+bone+length%2Ftotal+height+\"\r
\n" ); document.write( "\n" ); document.write( "since the bone length is given we then have \r
\n" ); document.write( "\n" ); document.write( "\"1%2F4+=+19.75in%2Ftotal+height\"\r
\n" ); document.write( "\n" ); document.write( "we can then cross multiply and you get \"+4+X+19.75+=+1+x+total+height\"\r
\n" ); document.write( "\n" ); document.write( "so 79 in = total height \r
\n" ); document.write( "\n" ); document.write( "but the question asks for feet
\n" ); document.write( "and there are 12 in in every foot \r
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\n" ); document.write( "\n" ); document.write( "so we use \"79in+X+1ft%2F12in+=+6.58+feet\" notice here that the inches units cancel out and we are left with feet
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