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Finding the Fourth Proportional to 54,201.70, 81,302.55 and 47,640.70

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Solution

The fourth proportional to 54,201.70, 81,302.55 and 47,640.70 is: 71,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,201.70 : 81,302.55 = 47,640.70 : x
  2. Step 2: Convert to fraction form
    54,201.70/81,302.55 = 47,640.70/x
  3. Step 3: Cross multiply
    54,201.70x = 81,302.55 × 47,640.70
  4. Step 4: Simplify right side
    54,201.70x = 3,873,310,393.79
  5. Step 5: Solve for x
    x = 3,873,310,393.79/54,201.70
  6. Step 6: Final answer
    x = 71,461.05

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