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Finding the Fourth Proportional to 167,891.20, 251,618.10 and 67,969.60

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Solution

The fourth proportional to 167,891.20, 251,618.10 and 67,969.60 is: 101,865.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,891.20 : 251,618.10 = 67,969.60 : x
  2. Step 2: Convert to fraction form
    167,891.20/251,618.10 = 67,969.60/x
  3. Step 3: Cross multiply
    167,891.20x = 251,618.10 × 67,969.60
  4. Step 4: Simplify right side
    167,891.20x = 17,102,381,609.76
  5. Step 5: Solve for x
    x = 17,102,381,609.76/167,891.20
  6. Step 6: Final answer
    x = 101,865.86

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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.