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Finding the Fourth Proportional to 57,859.20, 86,767.20 and 22,791.60

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Solution

The fourth proportional to 57,859.20, 86,767.20 and 22,791.60 is: 34,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,859.20 : 86,767.20 = 22,791.60 : x
  2. Step 2: Convert to fraction form
    57,859.20/86,767.20 = 22,791.60/x
  3. Step 3: Cross multiply
    57,859.20x = 86,767.20 × 22,791.60
  4. Step 4: Simplify right side
    57,859.20x = 1,977,563,315.52
  5. Step 5: Solve for x
    x = 1,977,563,315.52/57,859.20
  6. Step 6: Final answer
    x = 34,178.89

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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.