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Finding the Fourth Proportional to 57,945.80, 86,918.70 and 49,219.40

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Solution

The fourth proportional to 57,945.80, 86,918.70 and 49,219.40 is: 73,829.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,945.80 : 86,918.70 = 49,219.40 : x
  2. Step 2: Convert to fraction form
    57,945.80/86,918.70 = 49,219.40/x
  3. Step 3: Cross multiply
    57,945.80x = 86,918.70 × 49,219.40
  4. Step 4: Simplify right side
    57,945.80x = 4,278,086,262.78
  5. Step 5: Solve for x
    x = 4,278,086,262.78/57,945.80
  6. Step 6: Final answer
    x = 73,829.10

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