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Finding the Fourth Proportional to 22,411.27, 30,917.19 and 13,443.22

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Solution

The fourth proportional to 22,411.27, 30,917.19 and 13,443.22 is: 18,545.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,411.27 : 30,917.19 = 13,443.22 : x
  2. Step 2: Convert to fraction form
    22,411.27/30,917.19 = 13,443.22/x
  3. Step 3: Cross multiply
    22,411.27x = 30,917.19 × 13,443.22
  4. Step 4: Simplify right side
    22,411.27x = 415,626,586.95
  5. Step 5: Solve for x
    x = 415,626,586.95/22,411.27
  6. Step 6: Final answer
    x = 18,545.43

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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.