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Finding the Fourth Proportional to 607,545.40, 911,318.10 and 572,553.40

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Solution

The fourth proportional to 607,545.40, 911,318.10 and 572,553.40 is: 858,830.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,545.40 : 911,318.10 = 572,553.40 : x
  2. Step 2: Convert to fraction form
    607,545.40/911,318.10 = 572,553.40/x
  3. Step 3: Cross multiply
    607,545.40x = 911,318.10 × 572,553.40
  4. Step 4: Simplify right side
    607,545.40x = 521,778,276,636.54
  5. Step 5: Solve for x
    x = 521,778,276,636.54/607,545.40
  6. Step 6: Final answer
    x = 858,830.10

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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.