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Finding the Fourth Proportional to 124,799.20, 187,198.80 and 49,955.20

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Solution

The fourth proportional to 124,799.20, 187,198.80 and 49,955.20 is: 74,932.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,799.20 : 187,198.80 = 49,955.20 : x
  2. Step 2: Convert to fraction form
    124,799.20/187,198.80 = 49,955.20/x
  3. Step 3: Cross multiply
    124,799.20x = 187,198.80 × 49,955.20
  4. Step 4: Simplify right side
    124,799.20x = 9,351,553,493.76
  5. Step 5: Solve for x
    x = 9,351,553,493.76/124,799.20
  6. Step 6: Final answer
    x = 74,932.80

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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.