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Finding the Fourth Proportional to 121,096, 167,113.20 and 68,104

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Solution

The fourth proportional to 121,096, 167,113.20 and 68,104 is: 93,983.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,096 : 167,113.20 = 68,104 : x
  2. Step 2: Convert to fraction form
    121,096/167,113.20 = 68,104/x
  3. Step 3: Cross multiply
    121,096x = 167,113.20 × 68,104
  4. Step 4: Simplify right side
    121,096x = 11,381,077,372.80
  5. Step 5: Solve for x
    x = 11,381,077,372.80/121,096
  6. Step 6: Final answer
    x = 93,983.92

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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.