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Finding the Fourth Proportional to 283,726.80, 425,489.40 and 125,672.40

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Solution

The fourth proportional to 283,726.80, 425,489.40 and 125,672.40 is: 188,463.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,726.80 : 425,489.40 = 125,672.40 : x
  2. Step 2: Convert to fraction form
    283,726.80/425,489.40 = 125,672.40/x
  3. Step 3: Cross multiply
    283,726.80x = 425,489.40 × 125,672.40
  4. Step 4: Simplify right side
    283,726.80x = 53,472,274,072.56
  5. Step 5: Solve for x
    x = 53,472,274,072.56/283,726.80
  6. Step 6: Final answer
    x = 188,463.95

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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.