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Finding the Fourth Proportional to 656,545.40, 984,818.10 and 539,905.40

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Solution

The fourth proportional to 656,545.40, 984,818.10 and 539,905.40 is: 809,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,545.40 : 984,818.10 = 539,905.40 : x
  2. Step 2: Convert to fraction form
    656,545.40/984,818.10 = 539,905.40/x
  3. Step 3: Cross multiply
    656,545.40x = 984,818.10 × 539,905.40
  4. Step 4: Simplify right side
    656,545.40x = 531,708,610,207.74
  5. Step 5: Solve for x
    x = 531,708,610,207.74/656,545.40
  6. Step 6: Final answer
    x = 809,858.10

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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.