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Finding the Fourth Proportional to 22,396.29, 30,906.21 and 12,324.72

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Solution

The fourth proportional to 22,396.29, 30,906.21 and 12,324.72 is: 17,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,396.29 : 30,906.21 = 12,324.72 : x
  2. Step 2: Convert to fraction form
    22,396.29/30,906.21 = 12,324.72/x
  3. Step 3: Cross multiply
    22,396.29x = 30,906.21 × 12,324.72
  4. Step 4: Simplify right side
    22,396.29x = 380,910,546.63
  5. Step 5: Solve for x
    x = 380,910,546.63/22,396.29
  6. Step 6: Final answer
    x = 17,007.75

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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.