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Finding the Fourth Proportional to 13,758.85, 20,640.87 and 6,262.99

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Solution

The fourth proportional to 13,758.85, 20,640.87 and 6,262.99 is: 9,395.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.85 : 20,640.87 = 6,262.99 : x
  2. Step 2: Convert to fraction form
    13,758.85/20,640.87 = 6,262.99/x
  3. Step 3: Cross multiply
    13,758.85x = 20,640.87 × 6,262.99
  4. Step 4: Simplify right side
    13,758.85x = 129,273,562.40
  5. Step 5: Solve for x
    x = 129,273,562.40/13,758.85
  6. Step 6: Final answer
    x = 9,395.67

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