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Finding the Fourth Proportional to 22,057.65, 30,439.49 and 11,986.09

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Solution

The fourth proportional to 22,057.65, 30,439.49 and 11,986.09 is: 16,540.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,057.65 : 30,439.49 = 11,986.09 : x
  2. Step 2: Convert to fraction form
    22,057.65/30,439.49 = 11,986.09/x
  3. Step 3: Cross multiply
    22,057.65x = 30,439.49 × 11,986.09
  4. Step 4: Simplify right side
    22,057.65x = 364,850,466.69
  5. Step 5: Solve for x
    x = 364,850,466.69/22,057.65
  6. Step 6: Final answer
    x = 16,540.77

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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.