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Finding the Fourth Proportional to 113,240.40, 169,745.40 and 66,469.20

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Solution

The fourth proportional to 113,240.40, 169,745.40 and 66,469.20 is: 99,636.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,240.40 : 169,745.40 = 66,469.20 : x
  2. Step 2: Convert to fraction form
    113,240.40/169,745.40 = 66,469.20/x
  3. Step 3: Cross multiply
    113,240.40x = 169,745.40 × 66,469.20
  4. Step 4: Simplify right side
    113,240.40x = 11,282,840,941.68
  5. Step 5: Solve for x
    x = 11,282,840,941.68/113,240.40
  6. Step 6: Final answer
    x = 99,636.18

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