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Finding the Fourth Proportional to 113,766.20, 170,778.90 and 67,045.40

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Solution

The fourth proportional to 113,766.20, 170,778.90 and 67,045.40 is: 100,644.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,766.20 : 170,778.90 = 67,045.40 : x
  2. Step 2: Convert to fraction form
    113,766.20/170,778.90 = 67,045.40/x
  3. Step 3: Cross multiply
    113,766.20x = 170,778.90 × 67,045.40
  4. Step 4: Simplify right side
    113,766.20x = 11,449,939,662.06
  5. Step 5: Solve for x
    x = 11,449,939,662.06/113,766.20
  6. Step 6: Final answer
    x = 100,644.48

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