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Finding the Fourth Proportional to 527,910.28, 728,344.92 and 298,445.38

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Solution

The fourth proportional to 527,910.28, 728,344.92 and 298,445.38 is: 411,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,910.28 : 728,344.92 = 298,445.38 : x
  2. Step 2: Convert to fraction form
    527,910.28/728,344.92 = 298,445.38/x
  3. Step 3: Cross multiply
    527,910.28x = 728,344.92 × 298,445.38
  4. Step 4: Simplify right side
    527,910.28x = 217,371,176,420.47
  5. Step 5: Solve for x
    x = 217,371,176,420.47/527,910.28
  6. Step 6: Final answer
    x = 411,757.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.