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Finding the Fourth Proportional to 13,880.95, 20,822.68 and 4,518.54

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Solution

The fourth proportional to 13,880.95, 20,822.68 and 4,518.54 is: 6,778.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.95 : 20,822.68 = 4,518.54 : x
  2. Step 2: Convert to fraction form
    13,880.95/20,822.68 = 4,518.54/x
  3. Step 3: Cross multiply
    13,880.95x = 20,822.68 × 4,518.54
  4. Step 4: Simplify right side
    13,880.95x = 94,088,112.49
  5. Step 5: Solve for x
    x = 94,088,112.49/13,880.95
  6. Step 6: Final answer
    x = 6,778.22

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