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Finding the Fourth Proportional to 527,911.10, 791,866.65 and 520,037.90

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Solution

The fourth proportional to 527,911.10, 791,866.65 and 520,037.90 is: 780,056.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,911.10 : 791,866.65 = 520,037.90 : x
  2. Step 2: Convert to fraction form
    527,911.10/791,866.65 = 520,037.90/x
  3. Step 3: Cross multiply
    527,911.10x = 791,866.65 × 520,037.90
  4. Step 4: Simplify right side
    527,911.10x = 411,800,669,746.04
  5. Step 5: Solve for x
    x = 411,800,669,746.04/527,911.10
  6. Step 6: Final answer
    x = 780,056.85

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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.