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Finding the Fourth Proportional to 12,183.48, 16,822.11 and 7,879.11

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Solution

The fourth proportional to 12,183.48, 16,822.11 and 7,879.11 is: 10,878.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.48 : 16,822.11 = 7,879.11 : x
  2. Step 2: Convert to fraction form
    12,183.48/16,822.11 = 7,879.11/x
  3. Step 3: Cross multiply
    12,183.48x = 16,822.11 × 7,879.11
  4. Step 4: Simplify right side
    12,183.48x = 132,543,255.12
  5. Step 5: Solve for x
    x = 132,543,255.12/12,183.48
  6. Step 6: Final answer
    x = 10,878.93

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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.