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Finding the Third Proportional to 4,617 and 9,911

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Solution

The third proportional to 4,617 and 9,911 is: 21,275.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,617 : 9,911 = 9,911 : x
  2. Step 2: Convert to fraction form
    4,617/9,911 = 9,911/x
  3. Step 3: Cross multiply
    4,617x = 9,911 × 9,911
  4. Step 4: Simplify right side
    4,617x = 98,227,921
  5. Step 5: Solve for x
    x = 98,227,921/4,617
  6. Step 6: Final answer
    x = 21,275.27

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.