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Finding the Fourth Proportional to 57,201.20, 85,801.80 and 17,770.40

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Solution

The fourth proportional to 57,201.20, 85,801.80 and 17,770.40 is: 26,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,201.20 : 85,801.80 = 17,770.40 : x
  2. Step 2: Convert to fraction form
    57,201.20/85,801.80 = 17,770.40/x
  3. Step 3: Cross multiply
    57,201.20x = 85,801.80 × 17,770.40
  4. Step 4: Simplify right side
    57,201.20x = 1,524,732,306.72
  5. Step 5: Solve for x
    x = 1,524,732,306.72/57,201.20
  6. Step 6: Final answer
    x = 26,655.60

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