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Finding the Fourth Proportional to 11,891.84, 17,808.60 and 8,183.66

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Solution

The fourth proportional to 11,891.84, 17,808.60 and 8,183.66 is: 12,255.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.84 : 17,808.60 = 8,183.66 : x
  2. Step 2: Convert to fraction form
    11,891.84/17,808.60 = 8,183.66/x
  3. Step 3: Cross multiply
    11,891.84x = 17,808.60 × 8,183.66
  4. Step 4: Simplify right side
    11,891.84x = 145,739,527.48
  5. Step 5: Solve for x
    x = 145,739,527.48/11,891.84
  6. Step 6: Final answer
    x = 12,255.42

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1.5x scale

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.