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Finding the Fourth Proportional to 66,163.96, 91,344.28 and 43,568.62

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Solution

The fourth proportional to 66,163.96, 91,344.28 and 43,568.62 is: 60,149.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,163.96 : 91,344.28 = 43,568.62 : x
  2. Step 2: Convert to fraction form
    66,163.96/91,344.28 = 43,568.62/x
  3. Step 3: Cross multiply
    66,163.96x = 91,344.28 × 43,568.62
  4. Step 4: Simplify right side
    66,163.96x = 3,979,744,224.49
  5. Step 5: Solve for x
    x = 3,979,744,224.49/66,163.96
  6. Step 6: Final answer
    x = 60,149.73

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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.