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Finding the Fourth Proportional to 12,183.44, 18,181.90 and 10,871.12

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Solution

The fourth proportional to 12,183.44, 18,181.90 and 10,871.12 is: 16,223.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.44 : 18,181.90 = 10,871.12 : x
  2. Step 2: Convert to fraction form
    12,183.44/18,181.90 = 10,871.12/x
  3. Step 3: Cross multiply
    12,183.44x = 18,181.90 × 10,871.12
  4. Step 4: Simplify right side
    12,183.44x = 197,657,616.73
  5. Step 5: Solve for x
    x = 197,657,616.73/12,183.44
  6. Step 6: Final answer
    x = 16,223.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.