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Finding the Fourth Proportional to 12,221.44, 16,865.79 and 6,632.44

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Solution

The fourth proportional to 12,221.44, 16,865.79 and 6,632.44 is: 9,152.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.44 : 16,865.79 = 6,632.44 : x
  2. Step 2: Convert to fraction form
    12,221.44/16,865.79 = 6,632.44/x
  3. Step 3: Cross multiply
    12,221.44x = 16,865.79 × 6,632.44
  4. Step 4: Simplify right side
    12,221.44x = 111,861,273.19
  5. Step 5: Solve for x
    x = 111,861,273.19/12,221.44
  6. Step 6: Final answer
    x = 9,152.87

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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.