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Finding the Fourth Proportional to 394,561.40, 591,842.10 and 252,843.80

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Solution

The fourth proportional to 394,561.40, 591,842.10 and 252,843.80 is: 379,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,561.40 : 591,842.10 = 252,843.80 : x
  2. Step 2: Convert to fraction form
    394,561.40/591,842.10 = 252,843.80/x
  3. Step 3: Cross multiply
    394,561.40x = 591,842.10 × 252,843.80
  4. Step 4: Simplify right side
    394,561.40x = 149,643,605,563.98
  5. Step 5: Solve for x
    x = 149,643,605,563.98/394,561.40
  6. Step 6: Final answer
    x = 379,265.70

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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.