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Finding the Fourth Proportional to 121,452.50, 167,627.13 and 71,151.50

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Solution

The fourth proportional to 121,452.50, 167,627.13 and 71,151.50 is: 98,202.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,452.50 : 167,627.13 = 71,151.50 : x
  2. Step 2: Convert to fraction form
    121,452.50/167,627.13 = 71,151.50/x
  3. Step 3: Cross multiply
    121,452.50x = 167,627.13 × 71,151.50
  4. Step 4: Simplify right side
    121,452.50x = 11,926,921,740.20
  5. Step 5: Solve for x
    x = 11,926,921,740.20/121,452.50
  6. Step 6: Final answer
    x = 98,202.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.