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Finding the Fourth Proportional to 121,085.76, 167,099.18 and 67,373.04

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Solution

The fourth proportional to 121,085.76, 167,099.18 and 67,373.04 is: 92,975.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,085.76 : 167,099.18 = 67,373.04 : x
  2. Step 2: Convert to fraction form
    121,085.76/167,099.18 = 67,373.04/x
  3. Step 3: Cross multiply
    121,085.76x = 167,099.18 × 67,373.04
  4. Step 4: Simplify right side
    121,085.76x = 11,257,979,401.24
  5. Step 5: Solve for x
    x = 11,257,979,401.24/121,085.76
  6. Step 6: Final answer
    x = 92,975.25

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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.