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Finding the Fourth Proportional to 527,909.10, 791,863.65 and 520,035.90

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Solution

The fourth proportional to 527,909.10, 791,863.65 and 520,035.90 is: 780,053.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,909.10 : 791,863.65 = 520,035.90 : x
  2. Step 2: Convert to fraction form
    527,909.10/791,863.65 = 520,035.90/x
  3. Step 3: Cross multiply
    527,909.10x = 791,863.65 × 520,035.90
  4. Step 4: Simplify right side
    527,909.10x = 411,797,525,905.04
  5. Step 5: Solve for x
    x = 411,797,525,905.04/527,909.10
  6. Step 6: Final answer
    x = 780,053.85

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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.