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Finding the Fourth Proportional to 83,952.20, 125,636.70 and 57,708.20

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Solution

The fourth proportional to 83,952.20, 125,636.70 and 57,708.20 is: 86,361.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,952.20 : 125,636.70 = 57,708.20 : x
  2. Step 2: Convert to fraction form
    83,952.20/125,636.70 = 57,708.20/x
  3. Step 3: Cross multiply
    83,952.20x = 125,636.70 × 57,708.20
  4. Step 4: Simplify right side
    83,952.20x = 7,250,267,810.94
  5. Step 5: Solve for x
    x = 7,250,267,810.94/83,952.20
  6. Step 6: Final answer
    x = 86,361.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.