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Finding the Fourth Proportional to 118,061.60, 176,800.80 and 88,318.40

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Solution

The fourth proportional to 118,061.60, 176,800.80 and 88,318.40 is: 132,259.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,061.60 : 176,800.80 = 88,318.40 : x
  2. Step 2: Convert to fraction form
    118,061.60/176,800.80 = 88,318.40/x
  3. Step 3: Cross multiply
    118,061.60x = 176,800.80 × 88,318.40
  4. Step 4: Simplify right side
    118,061.60x = 15,614,763,774.72
  5. Step 5: Solve for x
    x = 15,614,763,774.72/118,061.60
  6. Step 6: Final answer
    x = 132,259.46

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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.