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Finding the Fourth Proportional to 22,480.65, 33,663.47 and 21,815.49

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Solution

The fourth proportional to 22,480.65, 33,663.47 and 21,815.49 is: 32,667.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,480.65 : 33,663.47 = 21,815.49 : x
  2. Step 2: Convert to fraction form
    22,480.65/33,663.47 = 21,815.49/x
  3. Step 3: Cross multiply
    22,480.65x = 33,663.47 × 21,815.49
  4. Step 4: Simplify right side
    22,480.65x = 734,385,093.15
  5. Step 5: Solve for x
    x = 734,385,093.15/22,480.65
  6. Step 6: Final answer
    x = 32,667.43

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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.