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Finding the Fourth Proportional to 121,469.79, 167,620.69 and 67,022.61

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Solution

The fourth proportional to 121,469.79, 167,620.69 and 67,022.61 is: 92,486.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,469.79 : 167,620.69 = 67,022.61 : x
  2. Step 2: Convert to fraction form
    121,469.79/167,620.69 = 67,022.61/x
  3. Step 3: Cross multiply
    121,469.79x = 167,620.69 × 67,022.61
  4. Step 4: Simplify right side
    121,469.79x = 11,234,375,589.00
  5. Step 5: Solve for x
    x = 11,234,375,589.00/121,469.79
  6. Step 6: Final answer
    x = 92,486.99

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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.