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Finding the Fourth Proportional to 18,791.12, 25,933.32 and 10,408.40

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Solution

The fourth proportional to 18,791.12, 25,933.32 and 10,408.40 is: 14,364.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.12 : 25,933.32 = 10,408.40 : x
  2. Step 2: Convert to fraction form
    18,791.12/25,933.32 = 10,408.40/x
  3. Step 3: Cross multiply
    18,791.12x = 25,933.32 × 10,408.40
  4. Step 4: Simplify right side
    18,791.12x = 269,924,367.89
  5. Step 5: Solve for x
    x = 269,924,367.89/18,791.12
  6. Step 6: Final answer
    x = 14,364.46

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