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Finding the Fourth Proportional to 121,671.57, 167,904.97 and 67,957.33

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Solution

The fourth proportional to 121,671.57, 167,904.97 and 67,957.33 is: 93,780.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,671.57 : 167,904.97 = 67,957.33 : x
  2. Step 2: Convert to fraction form
    121,671.57/167,904.97 = 67,957.33/x
  3. Step 3: Cross multiply
    121,671.57x = 167,904.97 × 67,957.33
  4. Step 4: Simplify right side
    121,671.57x = 11,410,373,454.93
  5. Step 5: Solve for x
    x = 11,410,373,454.93/121,671.57
  6. Step 6: Final answer
    x = 93,780.11

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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.