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Finding the Fourth Proportional to 121,174.85, 167,215.89 and 69,454.87

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Solution

The fourth proportional to 121,174.85, 167,215.89 and 69,454.87 is: 95,844.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,174.85 : 167,215.89 = 69,454.87 : x
  2. Step 2: Convert to fraction form
    121,174.85/167,215.89 = 69,454.87/x
  3. Step 3: Cross multiply
    121,174.85x = 167,215.89 × 69,454.87
  4. Step 4: Simplify right side
    121,174.85x = 11,613,957,744.30
  5. Step 5: Solve for x
    x = 11,613,957,744.30/121,174.85
  6. Step 6: Final answer
    x = 95,844.62

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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.