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Finding the Fourth Proportional to 394,559.40, 591,839.10 and 252,841.80

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Solution

The fourth proportional to 394,559.40, 591,839.10 and 252,841.80 is: 379,262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,559.40 : 591,839.10 = 252,841.80 : x
  2. Step 2: Convert to fraction form
    394,559.40/591,839.10 = 252,841.80/x
  3. Step 3: Cross multiply
    394,559.40x = 591,839.10 × 252,841.80
  4. Step 4: Simplify right side
    394,559.40x = 149,641,663,354.38
  5. Step 5: Solve for x
    x = 149,641,663,354.38/394,559.40
  6. Step 6: Final answer
    x = 379,262.70

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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.