Finding the Fourth Proportional to 1,272,838.92, 1,909,787.08 and 515,215.96
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Solution
The fourth proportional to 1,272,838.92, 1,909,787.08 and 515,215.96 is: 773,037.95
Step by Step Solution
- Step 1: Write the proportion equation
1,272,838.92 : 1,909,787.08 = 515,215.96 : x - Step 2: Convert to fraction form
1,272,838.92/1,909,787.08 = 515,215.96/x - Step 3: Cross multiply
1,272,838.92x = 1,909,787.08 × 515,215.96 - Step 4: Simplify right side
1,272,838.92x = 983,952,783,817.80 - Step 5: Solve for x
x = 983,952,783,817.80/1,272,838.92 - Step 6: Final answer
x = 773,037.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.