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Finding the Fourth Proportional to 121,086.14, 167,099.72 and 67,373.42

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Solution

The fourth proportional to 121,086.14, 167,099.72 and 67,373.42 is: 92,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,086.14 : 167,099.72 = 67,373.42 : x
  2. Step 2: Convert to fraction form
    121,086.14/167,099.72 = 67,373.42/x
  3. Step 3: Cross multiply
    121,086.14x = 167,099.72 × 67,373.42
  4. Step 4: Simplify right side
    121,086.14x = 11,258,078,445.08
  5. Step 5: Solve for x
    x = 11,258,078,445.08/121,086.14
  6. Step 6: Final answer
    x = 92,975.78

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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.