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Finding the Fourth Proportional to 206,998.80, 310,498.20 and 74,029.20

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Solution

The fourth proportional to 206,998.80, 310,498.20 and 74,029.20 is: 111,043.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,998.80 : 310,498.20 = 74,029.20 : x
  2. Step 2: Convert to fraction form
    206,998.80/310,498.20 = 74,029.20/x
  3. Step 3: Cross multiply
    206,998.80x = 310,498.20 × 74,029.20
  4. Step 4: Simplify right side
    206,998.80x = 22,985,933,347.44
  5. Step 5: Solve for x
    x = 22,985,933,347.44/206,998.80
  6. Step 6: Final answer
    x = 111,043.80

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