document.write( "Question 163277: the average of four numbers is 638.4 the first four numbers are 216 159.8 and 301.25 Find the fourth number. \n" ); document.write( "
Algebra.Com's Answer #120298 by edjones(8007)![]() ![]() You can put this solution on YOUR website! 216+159.8+301.25+x=638.4*4 \n" ); document.write( "677.05+x=2553.6 \n" ); document.write( "x=2553.6-677.05 \n" ); document.write( "x=1876.55 \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |