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Finding the Fourth Proportional to 121,568.44, 167,772.90 and 67,863.94

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Solution

The fourth proportional to 121,568.44, 167,772.90 and 67,863.94 is: 93,656.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,568.44 : 167,772.90 = 67,863.94 : x
  2. Step 2: Convert to fraction form
    121,568.44/167,772.90 = 67,863.94/x
  3. Step 3: Cross multiply
    121,568.44x = 167,772.90 × 67,863.94
  4. Step 4: Simplify right side
    121,568.44x = 11,385,730,019.23
  5. Step 5: Solve for x
    x = 11,385,730,019.23/121,568.44
  6. Step 6: Final answer
    x = 93,656.96

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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.