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Finding the Fourth Proportional to 117,697.60, 176,287.20 and 82,446.40

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Solution

The fourth proportional to 117,697.60, 176,287.20 and 82,446.40 is: 123,488.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,697.60 : 176,287.20 = 82,446.40 : x
  2. Step 2: Convert to fraction form
    117,697.60/176,287.20 = 82,446.40/x
  3. Step 3: Cross multiply
    117,697.60x = 176,287.20 × 82,446.40
  4. Step 4: Simplify right side
    117,697.60x = 14,534,245,006.08
  5. Step 5: Solve for x
    x = 14,534,245,006.08/117,697.60
  6. Step 6: Final answer
    x = 123,488.03

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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.