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Finding the Fourth Proportional to 16,762.70, 25,128.05 and 6,229.90

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Solution

The fourth proportional to 16,762.70, 25,128.05 and 6,229.90 is: 9,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,762.70 : 25,128.05 = 6,229.90 : x
  2. Step 2: Convert to fraction form
    16,762.70/25,128.05 = 6,229.90/x
  3. Step 3: Cross multiply
    16,762.70x = 25,128.05 × 6,229.90
  4. Step 4: Simplify right side
    16,762.70x = 156,545,238.70
  5. Step 5: Solve for x
    x = 156,545,238.70/16,762.70
  6. Step 6: Final answer
    x = 9,338.90

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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.