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Finding the Fourth Proportional to 113,803.20, 170,704.80 and 76,478.40

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Solution

The fourth proportional to 113,803.20, 170,704.80 and 76,478.40 is: 114,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,803.20 : 170,704.80 = 76,478.40 : x
  2. Step 2: Convert to fraction form
    113,803.20/170,704.80 = 76,478.40/x
  3. Step 3: Cross multiply
    113,803.20x = 170,704.80 × 76,478.40
  4. Step 4: Simplify right side
    113,803.20x = 13,055,229,976.32
  5. Step 5: Solve for x
    x = 13,055,229,976.32/113,803.20
  6. Step 6: Final answer
    x = 114,717.60

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