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Finding the Fourth Proportional to 619,757.80, 855,351.56 and 347,841.88

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Solution

The fourth proportional to 619,757.80, 855,351.56 and 347,841.88 is: 480,069.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,757.80 : 855,351.56 = 347,841.88 : x
  2. Step 2: Convert to fraction form
    619,757.80/855,351.56 = 347,841.88/x
  3. Step 3: Cross multiply
    619,757.80x = 855,351.56 × 347,841.88
  4. Step 4: Simplify right side
    619,757.80x = 297,527,094,691.33
  5. Step 5: Solve for x
    x = 297,527,094,691.33/619,757.80
  6. Step 6: Final answer
    x = 480,069.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.