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Finding the Third Proportional to 3,311 and 7,235

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Solution

The third proportional to 3,311 and 7,235 is: 15,809.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311 : 7,235 = 7,235 : x
  2. Step 2: Convert to fraction form
    3,311/7,235 = 7,235/x
  3. Step 3: Cross multiply
    3,311x = 7,235 × 7,235
  4. Step 4: Simplify right side
    3,311x = 52,345,225
  5. Step 5: Solve for x
    x = 52,345,225/3,311
  6. Step 6: Final answer
    x = 15,809.49

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.