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Finding the Fourth Proportional to 647,545.60, 971,318.40 and 542,569.60

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Solution

The fourth proportional to 647,545.60, 971,318.40 and 542,569.60 is: 813,854.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,545.60 : 971,318.40 = 542,569.60 : x
  2. Step 2: Convert to fraction form
    647,545.60/971,318.40 = 542,569.60/x
  3. Step 3: Cross multiply
    647,545.60x = 971,318.40 × 542,569.60
  4. Step 4: Simplify right side
    647,545.60x = 527,007,835,760.64
  5. Step 5: Solve for x
    x = 527,007,835,760.64/647,545.60
  6. Step 6: Final answer
    x = 813,854.40

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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.