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Finding the Fourth Proportional to 117,318.80, 175,978.20 and 115,569.20

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Solution

The fourth proportional to 117,318.80, 175,978.20 and 115,569.20 is: 173,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,318.80 : 175,978.20 = 115,569.20 : x
  2. Step 2: Convert to fraction form
    117,318.80/175,978.20 = 115,569.20/x
  3. Step 3: Cross multiply
    117,318.80x = 175,978.20 × 115,569.20
  4. Step 4: Simplify right side
    117,318.80x = 20,337,659,791.44
  5. Step 5: Solve for x
    x = 20,337,659,791.44/117,318.80
  6. Step 6: Final answer
    x = 173,353.80

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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.