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Finding the Fourth Proportional to 22,355.31, 30,850.42 and 12,283.97

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Solution

The fourth proportional to 22,355.31, 30,850.42 and 12,283.97 is: 16,951.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,355.31 : 30,850.42 = 12,283.97 : x
  2. Step 2: Convert to fraction form
    22,355.31/30,850.42 = 12,283.97/x
  3. Step 3: Cross multiply
    22,355.31x = 30,850.42 × 12,283.97
  4. Step 4: Simplify right side
    22,355.31x = 378,965,633.77
  5. Step 5: Solve for x
    x = 378,965,633.77/22,355.31
  6. Step 6: Final answer
    x = 16,951.93

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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.