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Finding the Fourth Proportional to 115,859.20, 173,788.80 and 74,387.20

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Solution

The fourth proportional to 115,859.20, 173,788.80 and 74,387.20 is: 111,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,859.20 : 173,788.80 = 74,387.20 : x
  2. Step 2: Convert to fraction form
    115,859.20/173,788.80 = 74,387.20/x
  3. Step 3: Cross multiply
    115,859.20x = 173,788.80 × 74,387.20
  4. Step 4: Simplify right side
    115,859.20x = 12,927,662,223.36
  5. Step 5: Solve for x
    x = 12,927,662,223.36/115,859.20
  6. Step 6: Final answer
    x = 111,580.80

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