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Finding the Fourth Proportional to 574,363.40, 861,873.15 and 396,997.70

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Solution

The fourth proportional to 574,363.40, 861,873.15 and 396,997.70 is: 595,723.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,363.40 : 861,873.15 = 396,997.70 : x
  2. Step 2: Convert to fraction form
    574,363.40/861,873.15 = 396,997.70/x
  3. Step 3: Cross multiply
    574,363.40x = 861,873.15 × 396,997.70
  4. Step 4: Simplify right side
    574,363.40x = 342,161,658,241.76
  5. Step 5: Solve for x
    x = 342,161,658,241.76/574,363.40
  6. Step 6: Final answer
    x = 595,723.30

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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.