document.write( "Question 1196576: Plese help me solve this geometric progression if 7,x,y,189 are in G.P Find x and y \n" ); document.write( "
Algebra.Com's Answer #829476 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi\r\n" );
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document.write( "Geometric progression: {7,x,y,189}\r\n" );
document.write( "\"a%5B1%5D+=+7\"  and \"a%5B4%5D+=189\"   |given\r\n" );
document.write( "Need to Know!\r\n" );
document.write( "\"a%5Bn%5D+=+a%5B1%5D%2Ar%5E%28n-1%29\"\r\n" );
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document.write( "\"a%5B4%5D+=+7%2Ar%5E%284-1%29\"\r\n" );
document.write( "7r^3 = 189\r\n" );
document.write( "or\r\n" );
document.write( "r^3 = 27\r\n" );
document.write( "r = 3\r\n" );
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document.write( "x = \"a%5B2%5D+=+7%2A3%5E%282-1%29+=+7%2A3%29\" = 21\r\n" );
document.write( "y= \"a%5B3%5D+=+7%2A3%5E%283-1%29+=+7%2A3%5E2\" = 63\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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