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Finding the Fourth Proportional to 206,579.40, 309,869.10 and 73,609.80

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Solution

The fourth proportional to 206,579.40, 309,869.10 and 73,609.80 is: 110,414.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,579.40 : 309,869.10 = 73,609.80 : x
  2. Step 2: Convert to fraction form
    206,579.40/309,869.10 = 73,609.80/x
  3. Step 3: Cross multiply
    206,579.40x = 309,869.10 × 73,609.80
  4. Step 4: Simplify right side
    206,579.40x = 22,809,402,477.18
  5. Step 5: Solve for x
    x = 22,809,402,477.18/206,579.40
  6. Step 6: Final answer
    x = 110,414.70

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