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Finding the Fourth Proportional to 18,742.92, 25,860.60 and 11,191.98

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Solution

The fourth proportional to 18,742.92, 25,860.60 and 11,191.98 is: 15,442.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.92 : 25,860.60 = 11,191.98 : x
  2. Step 2: Convert to fraction form
    18,742.92/25,860.60 = 11,191.98/x
  3. Step 3: Cross multiply
    18,742.92x = 25,860.60 × 11,191.98
  4. Step 4: Simplify right side
    18,742.92x = 289,431,317.99
  5. Step 5: Solve for x
    x = 289,431,317.99/18,742.92
  6. Step 6: Final answer
    x = 15,442.17

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