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Finding the Fourth Proportional to 57,825.80, 86,720.10 and 18,373.68

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Solution

The fourth proportional to 57,825.80, 86,720.10 and 18,373.68 is: 27,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,825.80 : 86,720.10 = 18,373.68 : x
  2. Step 2: Convert to fraction form
    57,825.80/86,720.10 = 18,373.68/x
  3. Step 3: Cross multiply
    57,825.80x = 86,720.10 × 18,373.68
  4. Step 4: Simplify right side
    57,825.80x = 1,593,367,366.97
  5. Step 5: Solve for x
    x = 1,593,367,366.97/57,825.80
  6. Step 6: Final answer
    x = 27,554.61

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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.