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Finding the Fourth Proportional to 16,751.20, 25,105.20 and 7,967.20

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Solution

The fourth proportional to 16,751.20, 25,105.20 and 7,967.20 is: 11,940.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,751.20 : 25,105.20 = 7,967.20 : x
  2. Step 2: Convert to fraction form
    16,751.20/25,105.20 = 7,967.20/x
  3. Step 3: Cross multiply
    16,751.20x = 25,105.20 × 7,967.20
  4. Step 4: Simplify right side
    16,751.20x = 200,018,149.44
  5. Step 5: Solve for x
    x = 200,018,149.44/16,751.20
  6. Step 6: Final answer
    x = 11,940.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.