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Finding the Fourth Proportional to 118,213.60, 177,028.80 and 88,470.40

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Solution

The fourth proportional to 118,213.60, 177,028.80 and 88,470.40 is: 132,487.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,213.60 : 177,028.80 = 88,470.40 : x
  2. Step 2: Convert to fraction form
    118,213.60/177,028.80 = 88,470.40/x
  3. Step 3: Cross multiply
    118,213.60x = 177,028.80 × 88,470.40
  4. Step 4: Simplify right side
    118,213.60x = 15,661,808,747.52
  5. Step 5: Solve for x
    x = 15,661,808,747.52/118,213.60
  6. Step 6: Final answer
    x = 132,487.37

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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.