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Finding the Fourth Proportional to 618,542.70, 927,814.05 and 478,401.90

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Solution

The fourth proportional to 618,542.70, 927,814.05 and 478,401.90 is: 717,602.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,542.70 : 927,814.05 = 478,401.90 : x
  2. Step 2: Convert to fraction form
    618,542.70/927,814.05 = 478,401.90/x
  3. Step 3: Cross multiply
    618,542.70x = 927,814.05 × 478,401.90
  4. Step 4: Simplify right side
    618,542.70x = 443,868,004,366.70
  5. Step 5: Solve for x
    x = 443,868,004,366.70/618,542.70
  6. Step 6: Final answer
    x = 717,602.85

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Similar ratio
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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.