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Finding the Fourth Proportional to 57,286.80, 85,930.20 and 53,398.80

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Solution

The fourth proportional to 57,286.80, 85,930.20 and 53,398.80 is: 80,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,286.80 : 85,930.20 = 53,398.80 : x
  2. Step 2: Convert to fraction form
    57,286.80/85,930.20 = 53,398.80/x
  3. Step 3: Cross multiply
    57,286.80x = 85,930.20 × 53,398.80
  4. Step 4: Simplify right side
    57,286.80x = 4,588,569,563.76
  5. Step 5: Solve for x
    x = 4,588,569,563.76/57,286.80
  6. Step 6: Final answer
    x = 80,098.20

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