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Finding the Fourth Proportional to 117,624.60, 176,436.90 and 115,291.80

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Solution

The fourth proportional to 117,624.60, 176,436.90 and 115,291.80 is: 172,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,624.60 : 176,436.90 = 115,291.80 : x
  2. Step 2: Convert to fraction form
    117,624.60/176,436.90 = 115,291.80/x
  3. Step 3: Cross multiply
    117,624.60x = 176,436.90 × 115,291.80
  4. Step 4: Simplify right side
    117,624.60x = 20,341,727,787.42
  5. Step 5: Solve for x
    x = 20,341,727,787.42/117,624.60
  6. Step 6: Final answer
    x = 172,937.70

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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.