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Finding the Fourth Proportional to 541,892.80, 813,363.84 and 261,606.72

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Solution

The fourth proportional to 541,892.80, 813,363.84 and 261,606.72 is: 392,663.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,892.80 : 813,363.84 = 261,606.72 : x
  2. Step 2: Convert to fraction form
    541,892.80/813,363.84 = 261,606.72/x
  3. Step 3: Cross multiply
    541,892.80x = 813,363.84 × 261,606.72
  4. Step 4: Simplify right side
    541,892.80x = 212,781,446,349.01
  5. Step 5: Solve for x
    x = 212,781,446,349.01/541,892.80
  6. Step 6: Final answer
    x = 392,663.36

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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.