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Finding the Fourth Proportional to 71,163.76, 98,200.80 and 39,333.28

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Solution

The fourth proportional to 71,163.76, 98,200.80 and 39,333.28 is: 54,277.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,163.76 : 98,200.80 = 39,333.28 : x
  2. Step 2: Convert to fraction form
    71,163.76/98,200.80 = 39,333.28/x
  3. Step 3: Cross multiply
    71,163.76x = 98,200.80 × 39,333.28
  4. Step 4: Simplify right side
    71,163.76x = 3,862,559,562.62
  5. Step 5: Solve for x
    x = 3,862,559,562.62/71,163.76
  6. Step 6: Final answer
    x = 54,277.06

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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.