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Finding the Fourth Proportional to 457,337.70, 686,006.55 and 394,352.10

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Solution

The fourth proportional to 457,337.70, 686,006.55 and 394,352.10 is: 591,528.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,337.70 : 686,006.55 = 394,352.10 : x
  2. Step 2: Convert to fraction form
    457,337.70/686,006.55 = 394,352.10/x
  3. Step 3: Cross multiply
    457,337.70x = 686,006.55 × 394,352.10
  4. Step 4: Simplify right side
    457,337.70x = 270,528,123,606.26
  5. Step 5: Solve for x
    x = 270,528,123,606.26/457,337.70
  6. Step 6: Final answer
    x = 591,528.15

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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.