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Finding the Fourth Proportional to 16,561.20, 24,866.10 and 12,867.60

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Solution

The fourth proportional to 16,561.20, 24,866.10 and 12,867.60 is: 19,320.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,561.20 : 24,866.10 = 12,867.60 : x
  2. Step 2: Convert to fraction form
    16,561.20/24,866.10 = 12,867.60/x
  3. Step 3: Cross multiply
    16,561.20x = 24,866.10 × 12,867.60
  4. Step 4: Simplify right side
    16,561.20x = 319,967,028.36
  5. Step 5: Solve for x
    x = 319,967,028.36/16,561.20
  6. Step 6: Final answer
    x = 19,320.28

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