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Finding the Fourth Proportional to 204,959.80, 307,482.90 and 86,570.20

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Solution

The fourth proportional to 204,959.80, 307,482.90 and 86,570.20 is: 129,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,959.80 : 307,482.90 = 86,570.20 : x
  2. Step 2: Convert to fraction form
    204,959.80/307,482.90 = 86,570.20/x
  3. Step 3: Cross multiply
    204,959.80x = 307,482.90 × 86,570.20
  4. Step 4: Simplify right side
    204,959.80x = 26,618,856,149.58
  5. Step 5: Solve for x
    x = 26,618,856,149.58/204,959.80
  6. Step 6: Final answer
    x = 129,873.55

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