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Finding the Fourth Proportional to 121,493.22, 167,660.72 and 67,778.24

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Solution

The fourth proportional to 121,493.22, 167,660.72 and 67,778.24 is: 93,534.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,493.22 : 167,660.72 = 67,778.24 : x
  2. Step 2: Convert to fraction form
    121,493.22/167,660.72 = 67,778.24/x
  3. Step 3: Cross multiply
    121,493.22x = 167,660.72 × 67,778.24
  4. Step 4: Simplify right side
    121,493.22x = 11,363,747,341.54
  5. Step 5: Solve for x
    x = 11,363,747,341.54/121,493.22
  6. Step 6: Final answer
    x = 93,534.00

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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.