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Finding the Fourth Proportional to 16,553.05, 24,806.00 and 8,221.28

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Solution

The fourth proportional to 16,553.05, 24,806.00 and 8,221.28 is: 12,320.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,553.05 : 24,806.00 = 8,221.28 : x
  2. Step 2: Convert to fraction form
    16,553.05/24,806.00 = 8,221.28/x
  3. Step 3: Cross multiply
    16,553.05x = 24,806.00 × 8,221.28
  4. Step 4: Simplify right side
    16,553.05x = 203,936,968.20
  5. Step 5: Solve for x
    x = 203,936,968.20/16,553.05
  6. Step 6: Final answer
    x = 12,320.21

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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.