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Finding the Third Proportional to 5,221 and 11,430

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Solution

The third proportional to 5,221 and 11,430 is: 25,022.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221 : 11,430 = 11,430 : x
  2. Step 2: Convert to fraction form
    5,221/11,430 = 11,430/x
  3. Step 3: Cross multiply
    5,221x = 11,430 × 11,430
  4. Step 4: Simplify right side
    5,221x = 130,644,900
  5. Step 5: Solve for x
    x = 130,644,900/5,221
  6. Step 6: Final answer
    x = 25,022.96

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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.