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Finding the Fourth Proportional to 13,828.97, 20,749.55 and 7,253.57

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Solution

The fourth proportional to 13,828.97, 20,749.55 and 7,253.57 is: 10,883.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.97 : 20,749.55 = 7,253.57 : x
  2. Step 2: Convert to fraction form
    13,828.97/20,749.55 = 7,253.57/x
  3. Step 3: Cross multiply
    13,828.97x = 20,749.55 × 7,253.57
  4. Step 4: Simplify right side
    13,828.97x = 150,508,173.38
  5. Step 5: Solve for x
    x = 150,508,173.38/13,828.97
  6. Step 6: Final answer
    x = 10,883.55

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