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Finding the Fourth Proportional to 16,578.61, 22,879.67 and 9,311.29

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Solution

The fourth proportional to 16,578.61, 22,879.67 and 9,311.29 is: 12,850.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,578.61 : 22,879.67 = 9,311.29 : x
  2. Step 2: Convert to fraction form
    16,578.61/22,879.67 = 9,311.29/x
  3. Step 3: Cross multiply
    16,578.61x = 22,879.67 × 9,311.29
  4. Step 4: Simplify right side
    16,578.61x = 213,039,138.72
  5. Step 5: Solve for x
    x = 213,039,138.72/16,578.61
  6. Step 6: Final answer
    x = 12,850.24

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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.