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Finding the Fourth Proportional to 381,716.80, 572,575.20 and 335,060.80

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Solution

The fourth proportional to 381,716.80, 572,575.20 and 335,060.80 is: 502,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,716.80 : 572,575.20 = 335,060.80 : x
  2. Step 2: Convert to fraction form
    381,716.80/572,575.20 = 335,060.80/x
  3. Step 3: Cross multiply
    381,716.80x = 572,575.20 × 335,060.80
  4. Step 4: Simplify right side
    381,716.80x = 191,847,504,572.16
  5. Step 5: Solve for x
    x = 191,847,504,572.16/381,716.80
  6. Step 6: Final answer
    x = 502,591.20

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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.