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Finding the Fourth Proportional to 14,198.18, 19,593.89 and 7,910.55

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Solution

The fourth proportional to 14,198.18, 19,593.89 and 7,910.55 is: 10,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,198.18 : 19,593.89 = 7,910.55 : x
  2. Step 2: Convert to fraction form
    14,198.18/19,593.89 = 7,910.55/x
  3. Step 3: Cross multiply
    14,198.18x = 19,593.89 × 7,910.55
  4. Step 4: Simplify right side
    14,198.18x = 154,998,406.99
  5. Step 5: Solve for x
    x = 154,998,406.99/14,198.18
  6. Step 6: Final answer
    x = 10,916.78

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1.5x scale

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.