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Finding the Fourth Proportional to 16,372, 22,593.42 and 8,920

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Solution

The fourth proportional to 16,372, 22,593.42 and 8,920 is: 12,309.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,372 : 22,593.42 = 8,920 : x
  2. Step 2: Convert to fraction form
    16,372/22,593.42 = 8,920/x
  3. Step 3: Cross multiply
    16,372x = 22,593.42 × 8,920
  4. Step 4: Simplify right side
    16,372x = 201,533,306.40
  5. Step 5: Solve for x
    x = 201,533,306.40/16,372
  6. Step 6: Final answer
    x = 12,309.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.