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Finding the Fourth Proportional to 118,407.90, 177,458.75 and 88,591.80

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Solution

The fourth proportional to 118,407.90, 177,458.75 and 88,591.80 is: 132,773.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,407.90 : 177,458.75 = 88,591.80 : x
  2. Step 2: Convert to fraction form
    118,407.90/177,458.75 = 88,591.80/x
  3. Step 3: Cross multiply
    118,407.90x = 177,458.75 × 88,591.80
  4. Step 4: Simplify right side
    118,407.90x = 15,721,390,088.25
  5. Step 5: Solve for x
    x = 15,721,390,088.25/118,407.90
  6. Step 6: Final answer
    x = 132,773.15

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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.