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Finding the Fourth Proportional to 22,181.97, 30,609.97 and 12,108.48

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Solution

The fourth proportional to 22,181.97, 30,609.97 and 12,108.48 is: 16,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,181.97 : 30,609.97 = 12,108.48 : x
  2. Step 2: Convert to fraction form
    22,181.97/30,609.97 = 12,108.48/x
  3. Step 3: Cross multiply
    22,181.97x = 30,609.97 × 12,108.48
  4. Step 4: Simplify right side
    22,181.97x = 370,640,064.49
  5. Step 5: Solve for x
    x = 370,640,064.49/22,181.97
  6. Step 6: Final answer
    x = 16,709.07

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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.