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Finding the Fourth Proportional to 113,893.20, 170,969.40 and 67,172.40

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Solution

The fourth proportional to 113,893.20, 170,969.40 and 67,172.40 is: 100,835.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,893.20 : 170,969.40 = 67,172.40 : x
  2. Step 2: Convert to fraction form
    113,893.20/170,969.40 = 67,172.40/x
  3. Step 3: Cross multiply
    113,893.20x = 170,969.40 × 67,172.40
  4. Step 4: Simplify right side
    113,893.20x = 11,484,424,924.56
  5. Step 5: Solve for x
    x = 11,484,424,924.56/113,893.20
  6. Step 6: Final answer
    x = 100,835.04

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