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Finding the Fourth Proportional to 127,511.20, 192,221.80 and 118,947.88

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Solution

The fourth proportional to 127,511.20, 192,221.80 and 118,947.88 is: 179,312.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,511.20 : 192,221.80 = 118,947.88 : x
  2. Step 2: Convert to fraction form
    127,511.20/192,221.80 = 118,947.88/x
  3. Step 3: Cross multiply
    127,511.20x = 192,221.80 × 118,947.88
  4. Step 4: Simplify right side
    127,511.20x = 22,864,375,599.78
  5. Step 5: Solve for x
    x = 22,864,375,599.78/127,511.20
  6. Step 6: Final answer
    x = 179,312.68

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.