document.write( "Question 376067: if a, b, c, and f are four nonzero numbers, then all of the following proportions are equivalent EXCEPT\r
\n" ); document.write( "\n" ); document.write( "a.) a/f = b/c
\n" ); document.write( "b.) f/c = b/a
\n" ); document.write( "c.) c/a = f/b
\n" ); document.write( "d.) a/c = b/f
\n" ); document.write( "e.) af/bc = 1/1 \n" ); document.write( "
Algebra.Com's Answer #267471 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "a.) a/f = b/c\r\n" );
document.write( "b.) f/c = b/a\r\n" );
document.write( "c.) c/a = f/b\r\n" );
document.write( "d.) a/c = b/f\r\n" );
document.write( "e.) af/bc = 1/1\r\n" );
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document.write( "Cross multiply each one:\r\n" );
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document.write( "a.) a/f = b/c     ---> ac = bf\r\n" );
document.write( "b.) f/c = b/a     ---> af = bc\r\n" );
document.write( "c.) c/a = f/b     ---> bc = af\r\n" );
document.write( "d.) a/c = b/f     ---> af = bc\r\n" );
document.write( "e.) af/bc = 1/1   ---> af = bc\r\n" );
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document.write( "Obviously they're all the same except a.)\r\n" );
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document.write( "Edwin

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