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Finding the Fourth Proportional to 618,317.20, 927,475.80 and 557,299.90

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Solution

The fourth proportional to 618,317.20, 927,475.80 and 557,299.90 is: 835,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,317.20 : 927,475.80 = 557,299.90 : x
  2. Step 2: Convert to fraction form
    618,317.20/927,475.80 = 557,299.90/x
  3. Step 3: Cross multiply
    618,317.20x = 927,475.80 × 557,299.90
  4. Step 4: Simplify right side
    618,317.20x = 516,882,170,592.42
  5. Step 5: Solve for x
    x = 516,882,170,592.42/618,317.20
  6. Step 6: Final answer
    x = 835,949.85

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Double scale
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Similar ratio
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1.5x scale

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.