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Finding the Fourth Proportional to 124,960.60, 187,440.90 and 115,337.80

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Solution

The fourth proportional to 124,960.60, 187,440.90 and 115,337.80 is: 173,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,960.60 : 187,440.90 = 115,337.80 : x
  2. Step 2: Convert to fraction form
    124,960.60/187,440.90 = 115,337.80/x
  3. Step 3: Cross multiply
    124,960.60x = 187,440.90 × 115,337.80
  4. Step 4: Simplify right side
    124,960.60x = 21,619,021,036.02
  5. Step 5: Solve for x
    x = 21,619,021,036.02/124,960.60
  6. Step 6: Final answer
    x = 173,006.70

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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.