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Finding the Fourth Proportional to 71,798.60, 108,239.49 and 66,983.56

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Solution

The fourth proportional to 71,798.60, 108,239.49 and 66,983.56 is: 100,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,798.60 : 108,239.49 = 66,983.56 : x
  2. Step 2: Convert to fraction form
    71,798.60/108,239.49 = 66,983.56/x
  3. Step 3: Cross multiply
    71,798.60x = 108,239.49 × 66,983.56
  4. Step 4: Simplify right side
    71,798.60x = 7,250,266,102.19
  5. Step 5: Solve for x
    x = 7,250,266,102.19/71,798.60
  6. Step 6: Final answer
    x = 100,980.60

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