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Finding the Fourth Proportional to 206,866.40, 310,453.20 and 82,296.80

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Solution

The fourth proportional to 206,866.40, 310,453.20 and 82,296.80 is: 123,506.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,866.40 : 310,453.20 = 82,296.80 : x
  2. Step 2: Convert to fraction form
    206,866.40/310,453.20 = 82,296.80/x
  3. Step 3: Cross multiply
    206,866.40x = 310,453.20 × 82,296.80
  4. Step 4: Simplify right side
    206,866.40x = 25,549,304,909.76
  5. Step 5: Solve for x
    x = 25,549,304,909.76/206,866.40
  6. Step 6: Final answer
    x = 123,506.31

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