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Finding the Fourth Proportional to 19,906.08, 29,859.44 and 8,216.48

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Solution

The fourth proportional to 19,906.08, 29,859.44 and 8,216.48 is: 12,324.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,906.08 : 29,859.44 = 8,216.48 : x
  2. Step 2: Convert to fraction form
    19,906.08/29,859.44 = 8,216.48/x
  3. Step 3: Cross multiply
    19,906.08x = 29,859.44 × 8,216.48
  4. Step 4: Simplify right side
    19,906.08x = 245,339,491.57
  5. Step 5: Solve for x
    x = 245,339,491.57/19,906.08
  6. Step 6: Final answer
    x = 12,324.85

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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.