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Finding the Fourth Proportional to 53,928.21, 80,928.78 and 18,868.17

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Solution

The fourth proportional to 53,928.21, 80,928.78 and 18,868.17 is: 28,315.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,928.21 : 80,928.78 = 18,868.17 : x
  2. Step 2: Convert to fraction form
    53,928.21/80,928.78 = 18,868.17/x
  3. Step 3: Cross multiply
    53,928.21x = 80,928.78 × 18,868.17
  4. Step 4: Simplify right side
    53,928.21x = 1,526,977,978.93
  5. Step 5: Solve for x
    x = 1,526,977,978.93/53,928.21
  6. Step 6: Final answer
    x = 28,315.01

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