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Finding the Fourth Proportional to 16,183.76, 22,331.94 and 9,109.76

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Solution

The fourth proportional to 16,183.76, 22,331.94 and 9,109.76 is: 12,570.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,183.76 : 22,331.94 = 9,109.76 : x
  2. Step 2: Convert to fraction form
    16,183.76/22,331.94 = 9,109.76/x
  3. Step 3: Cross multiply
    16,183.76x = 22,331.94 × 9,109.76
  4. Step 4: Simplify right side
    16,183.76x = 203,438,613.73
  5. Step 5: Solve for x
    x = 203,438,613.73/16,183.76
  6. Step 6: Final answer
    x = 12,570.54

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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.