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Finding the Fourth Proportional to 31,351.59, 47,021.94 and 12,371.16

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Solution

The fourth proportional to 31,351.59, 47,021.94 and 12,371.16 is: 18,554.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,351.59 : 47,021.94 = 12,371.16 : x
  2. Step 2: Convert to fraction form
    31,351.59/47,021.94 = 12,371.16/x
  3. Step 3: Cross multiply
    31,351.59x = 47,021.94 × 12,371.16
  4. Step 4: Simplify right side
    31,351.59x = 581,715,943.25
  5. Step 5: Solve for x
    x = 581,715,943.25/31,351.59
  6. Step 6: Final answer
    x = 18,554.59

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