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Finding the Fourth Proportional to 28,747.92, 39,672.11 and 16,172.67

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Solution

The fourth proportional to 28,747.92, 39,672.11 and 16,172.67 is: 22,318.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.92 : 39,672.11 = 16,172.67 : x
  2. Step 2: Convert to fraction form
    28,747.92/39,672.11 = 16,172.67/x
  3. Step 3: Cross multiply
    28,747.92x = 39,672.11 × 16,172.67
  4. Step 4: Simplify right side
    28,747.92x = 641,603,943.23
  5. Step 5: Solve for x
    x = 641,603,943.23/28,747.92
  6. Step 6: Final answer
    x = 22,318.27

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