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Finding the Fourth Proportional to 121,369.89, 167,484.81 and 67,660.02

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Solution

The fourth proportional to 121,369.89, 167,484.81 and 67,660.02 is: 93,367.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,369.89 : 167,484.81 = 67,660.02 : x
  2. Step 2: Convert to fraction form
    121,369.89/167,484.81 = 67,660.02/x
  3. Step 3: Cross multiply
    121,369.89x = 167,484.81 × 67,660.02
  4. Step 4: Simplify right side
    121,369.89x = 11,332,025,594.30
  5. Step 5: Solve for x
    x = 11,332,025,594.30/121,369.89
  6. Step 6: Final answer
    x = 93,367.68

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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.