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Finding the Fourth Proportional to 31,887.88, 47,851.76 and 20,041.12

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Solution

The fourth proportional to 31,887.88, 47,851.76 and 20,041.12 is: 30,074.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,887.88 : 47,851.76 = 20,041.12 : x
  2. Step 2: Convert to fraction form
    31,887.88/47,851.76 = 20,041.12/x
  3. Step 3: Cross multiply
    31,887.88x = 47,851.76 × 20,041.12
  4. Step 4: Simplify right side
    31,887.88x = 959,002,864.37
  5. Step 5: Solve for x
    x = 959,002,864.37/31,887.88
  6. Step 6: Final answer
    x = 30,074.21

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