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Finding the Fourth Proportional to 113,086.80, 169,630.20 and 86,842.80

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Solution

The fourth proportional to 113,086.80, 169,630.20 and 86,842.80 is: 130,264.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,086.80 : 169,630.20 = 86,842.80 : x
  2. Step 2: Convert to fraction form
    113,086.80/169,630.20 = 86,842.80/x
  3. Step 3: Cross multiply
    113,086.80x = 169,630.20 × 86,842.80
  4. Step 4: Simplify right side
    113,086.80x = 14,731,161,532.56
  5. Step 5: Solve for x
    x = 14,731,161,532.56/113,086.80
  6. Step 6: Final answer
    x = 130,264.20

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