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Finding the Third Proportional to 3,318 and 4,881

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Solution

The third proportional to 3,318 and 4,881 is: 7,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318 : 4,881 = 4,881 : x
  2. Step 2: Convert to fraction form
    3,318/4,881 = 4,881/x
  3. Step 3: Cross multiply
    3,318x = 4,881 × 4,881
  4. Step 4: Simplify right side
    3,318x = 23,824,161
  5. Step 5: Solve for x
    x = 23,824,161/3,318
  6. Step 6: Final answer
    x = 7,180.28

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.