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Finding the Fourth Proportional to 22,318.31, 33,479.42 and 8,278.49

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Solution

The fourth proportional to 22,318.31, 33,479.42 and 8,278.49 is: 12,418.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,318.31 : 33,479.42 = 8,278.49 : x
  2. Step 2: Convert to fraction form
    22,318.31/33,479.42 = 8,278.49/x
  3. Step 3: Cross multiply
    22,318.31x = 33,479.42 × 8,278.49
  4. Step 4: Simplify right side
    22,318.31x = 277,158,896.97
  5. Step 5: Solve for x
    x = 277,158,896.97/22,318.31
  6. Step 6: Final answer
    x = 12,418.46

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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.