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Finding the Fourth Proportional to 10,991.73, 16,474.05 and 6,251.86

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Solution

The fourth proportional to 10,991.73, 16,474.05 and 6,251.86 is: 9,370.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.73 : 16,474.05 = 6,251.86 : x
  2. Step 2: Convert to fraction form
    10,991.73/16,474.05 = 6,251.86/x
  3. Step 3: Cross multiply
    10,991.73x = 16,474.05 × 6,251.86
  4. Step 4: Simplify right side
    10,991.73x = 102,993,486.55
  5. Step 5: Solve for x
    x = 102,993,486.55/10,991.73
  6. Step 6: Final answer
    x = 9,370.09

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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.