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Finding the Fourth Proportional to 120,046.61, 180,016.88 and 63,873.41

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Solution

The fourth proportional to 120,046.61, 180,016.88 and 63,873.41 is: 95,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,046.61 : 180,016.88 = 63,873.41 : x
  2. Step 2: Convert to fraction form
    120,046.61/180,016.88 = 63,873.41/x
  3. Step 3: Cross multiply
    120,046.61x = 180,016.88 × 63,873.41
  4. Step 4: Simplify right side
    120,046.61x = 11,498,290,763.71
  5. Step 5: Solve for x
    x = 11,498,290,763.71/120,046.61
  6. Step 6: Final answer
    x = 95,781.88

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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.