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Finding the Fourth Proportional to 14,478.95, 21,721.61 and 8,241.90

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Solution

The fourth proportional to 14,478.95, 21,721.61 and 8,241.90 is: 12,364.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.95 : 21,721.61 = 8,241.90 : x
  2. Step 2: Convert to fraction form
    14,478.95/21,721.61 = 8,241.90/x
  3. Step 3: Cross multiply
    14,478.95x = 21,721.61 × 8,241.90
  4. Step 4: Simplify right side
    14,478.95x = 179,027,337.46
  5. Step 5: Solve for x
    x = 179,027,337.46/14,478.95
  6. Step 6: Final answer
    x = 12,364.66

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