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Finding the Fourth Proportional to 22,581.31, 33,872.78 and 7,790.71

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Solution

The fourth proportional to 22,581.31, 33,872.78 and 7,790.71 is: 11,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,581.31 : 33,872.78 = 7,790.71 : x
  2. Step 2: Convert to fraction form
    22,581.31/33,872.78 = 7,790.71/x
  3. Step 3: Cross multiply
    22,581.31x = 33,872.78 × 7,790.71
  4. Step 4: Simplify right side
    22,581.31x = 263,893,005.87
  5. Step 5: Solve for x
    x = 263,893,005.87/22,581.31
  6. Step 6: Final answer
    x = 11,686.35

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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.