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Finding the Fourth Proportional to 577,295.10, 865,359.45 and 261,978.30

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Solution

The fourth proportional to 577,295.10, 865,359.45 and 261,978.30 is: 392,702.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,295.10 : 865,359.45 = 261,978.30 : x
  2. Step 2: Convert to fraction form
    577,295.10/865,359.45 = 261,978.30/x
  3. Step 3: Cross multiply
    577,295.10x = 865,359.45 × 261,978.30
  4. Step 4: Simplify right side
    577,295.10x = 226,705,397,599.94
  5. Step 5: Solve for x
    x = 226,705,397,599.94/577,295.10
  6. Step 6: Final answer
    x = 392,702.79

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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.