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Finding the Fourth Proportional to 18,165.42, 27,196.20 and 12,311.64

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Solution

The fourth proportional to 18,165.42, 27,196.20 and 12,311.64 is: 18,432.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,165.42 : 27,196.20 = 12,311.64 : x
  2. Step 2: Convert to fraction form
    18,165.42/27,196.20 = 12,311.64/x
  3. Step 3: Cross multiply
    18,165.42x = 27,196.20 × 12,311.64
  4. Step 4: Simplify right side
    18,165.42x = 334,829,823.77
  5. Step 5: Solve for x
    x = 334,829,823.77/18,165.42
  6. Step 6: Final answer
    x = 18,432.26

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