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Finding the Fourth Proportional to 618,319.20, 927,478.80 and 557,301.90

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Solution

The fourth proportional to 618,319.20, 927,478.80 and 557,301.90 is: 835,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,319.20 : 927,478.80 = 557,301.90 : x
  2. Step 2: Convert to fraction form
    618,319.20/927,478.80 = 557,301.90/x
  3. Step 3: Cross multiply
    618,319.20x = 927,478.80 × 557,301.90
  4. Step 4: Simplify right side
    618,319.20x = 516,885,697,449.72
  5. Step 5: Solve for x
    x = 516,885,697,449.72/618,319.20
  6. Step 6: Final answer
    x = 835,952.85

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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.