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Finding the Third Proportional to 7,212.38 and 15,616.13

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Solution

The third proportional to 7,212.38 and 15,616.13 is: 33,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.38 : 15,616.13 = 15,616.13 : x
  2. Step 2: Convert to fraction form
    7,212.38/15,616.13 = 15,616.13/x
  3. Step 3: Cross multiply
    7,212.38x = 15,616.13 × 15,616.13
  4. Step 4: Simplify right side
    7,212.38x = 243,863,360.02
  5. Step 5: Solve for x
    x = 243,863,360.02/7,212.38
  6. Step 6: Final answer
    x = 33,811.80

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.