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Finding the Third Proportional to 3,553 and 9,111

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Solution

The third proportional to 3,553 and 9,111 is: 23,363.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553 : 9,111 = 9,111 : x
  2. Step 2: Convert to fraction form
    3,553/9,111 = 9,111/x
  3. Step 3: Cross multiply
    3,553x = 9,111 × 9,111
  4. Step 4: Simplify right side
    3,553x = 83,010,321
  5. Step 5: Solve for x
    x = 83,010,321/3,553
  6. Step 6: Final answer
    x = 23,363.45

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.