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Finding the Fourth Proportional to 121,658.66, 167,887.29 and 67,944.62

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Solution

The fourth proportional to 121,658.66, 167,887.29 and 67,944.62 is: 93,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,658.66 : 167,887.29 = 67,944.62 : x
  2. Step 2: Convert to fraction form
    121,658.66/167,887.29 = 67,944.62/x
  3. Step 3: Cross multiply
    121,658.66x = 167,887.29 × 67,944.62
  4. Step 4: Simplify right side
    121,658.66x = 11,407,038,121.88
  5. Step 5: Solve for x
    x = 11,407,038,121.88/121,658.66
  6. Step 6: Final answer
    x = 93,762.65

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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.