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Finding the Fourth Proportional to 168,163.97, 251,965.18 and 118,154.57

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Solution

The fourth proportional to 168,163.97, 251,965.18 and 118,154.57 is: 177,034.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,163.97 : 251,965.18 = 118,154.57 : x
  2. Step 2: Convert to fraction form
    168,163.97/251,965.18 = 118,154.57/x
  3. Step 3: Cross multiply
    168,163.97x = 251,965.18 × 118,154.57
  4. Step 4: Simplify right side
    168,163.97x = 29,770,838,511.70
  5. Step 5: Solve for x
    x = 29,770,838,511.70/168,163.97
  6. Step 6: Final answer
    x = 177,034.58

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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.