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Finding the Fourth Proportional to 57,768.80, 86,461.20 and 41,928.80

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Solution

The fourth proportional to 57,768.80, 86,461.20 and 41,928.80 is: 62,753.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,768.80 : 86,461.20 = 41,928.80 : x
  2. Step 2: Convert to fraction form
    57,768.80/86,461.20 = 41,928.80/x
  3. Step 3: Cross multiply
    57,768.80x = 86,461.20 × 41,928.80
  4. Step 4: Simplify right side
    57,768.80x = 3,625,214,362.56
  5. Step 5: Solve for x
    x = 3,625,214,362.56/57,768.80
  6. Step 6: Final answer
    x = 62,753.85

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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.