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Finding the Fourth Proportional to 121,049.92, 167,033.64 and 67,337.20

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Solution

The fourth proportional to 121,049.92, 167,033.64 and 67,337.20 is: 92,916.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,049.92 : 167,033.64 = 67,337.20 : x
  2. Step 2: Convert to fraction form
    121,049.92/167,033.64 = 67,337.20/x
  3. Step 3: Cross multiply
    121,049.92x = 167,033.64 × 67,337.20
  4. Step 4: Simplify right side
    121,049.92x = 11,247,577,623.41
  5. Step 5: Solve for x
    x = 11,247,577,623.41/121,049.92
  6. Step 6: Final answer
    x = 92,916.85

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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.