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Finding the Fourth Proportional to 20,877.44, 31,237.68 and 14,649.60

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Solution

The fourth proportional to 20,877.44, 31,237.68 and 14,649.60 is: 21,919.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.44 : 31,237.68 = 14,649.60 : x
  2. Step 2: Convert to fraction form
    20,877.44/31,237.68 = 14,649.60/x
  3. Step 3: Cross multiply
    20,877.44x = 31,237.68 × 14,649.60
  4. Step 4: Simplify right side
    20,877.44x = 457,619,516.93
  5. Step 5: Solve for x
    x = 457,619,516.93/20,877.44
  6. Step 6: Final answer
    x = 21,919.33

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