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Finding the Fourth Proportional to 526,545.20, 789,817.80 and 521,296.40

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Solution

The fourth proportional to 526,545.20, 789,817.80 and 521,296.40 is: 781,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,545.20 : 789,817.80 = 521,296.40 : x
  2. Step 2: Convert to fraction form
    526,545.20/789,817.80 = 521,296.40/x
  3. Step 3: Cross multiply
    526,545.20x = 789,817.80 × 521,296.40
  4. Step 4: Simplify right side
    526,545.20x = 411,729,175,795.92
  5. Step 5: Solve for x
    x = 411,729,175,795.92/526,545.20
  6. Step 6: Final answer
    x = 781,944.60

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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.