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Finding the Fourth Proportional to 117,638.80, 176,458.20 and 115,694.80

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Solution

The fourth proportional to 117,638.80, 176,458.20 and 115,694.80 is: 173,542.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,638.80 : 176,458.20 = 115,694.80 : x
  2. Step 2: Convert to fraction form
    117,638.80/176,458.20 = 115,694.80/x
  3. Step 3: Cross multiply
    117,638.80x = 176,458.20 × 115,694.80
  4. Step 4: Simplify right side
    117,638.80x = 20,415,296,157.36
  5. Step 5: Solve for x
    x = 20,415,296,157.36/117,638.80
  6. Step 6: Final answer
    x = 173,542.20

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