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Finding the Fourth Proportional to 109,726.50, 151,422.60 and 59,425.50

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Solution

The fourth proportional to 109,726.50, 151,422.60 and 59,425.50 is: 82,007.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,726.50 : 151,422.60 = 59,425.50 : x
  2. Step 2: Convert to fraction form
    109,726.50/151,422.60 = 59,425.50/x
  3. Step 3: Cross multiply
    109,726.50x = 151,422.60 × 59,425.50
  4. Step 4: Simplify right side
    109,726.50x = 8,998,363,716.30
  5. Step 5: Solve for x
    x = 8,998,363,716.30/109,726.50
  6. Step 6: Final answer
    x = 82,007.21

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1.5x scale

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.