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Finding the Fourth Proportional to 117,836.20, 176,322.30 and 86,732.20

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Solution

The fourth proportional to 117,836.20, 176,322.30 and 86,732.20 is: 129,780.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,836.20 : 176,322.30 = 86,732.20 : x
  2. Step 2: Convert to fraction form
    117,836.20/176,322.30 = 86,732.20/x
  3. Step 3: Cross multiply
    117,836.20x = 176,322.30 × 86,732.20
  4. Step 4: Simplify right side
    117,836.20x = 15,292,820,988.06
  5. Step 5: Solve for x
    x = 15,292,820,988.06/117,836.20
  6. Step 6: Final answer
    x = 129,780.33

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