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Finding the Third Proportional to 13,464 and 20,553

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Solution

The third proportional to 13,464 and 20,553 is: 31,374.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,464 : 20,553 = 20,553 : x
  2. Step 2: Convert to fraction form
    13,464/20,553 = 20,553/x
  3. Step 3: Cross multiply
    13,464x = 20,553 × 20,553
  4. Step 4: Simplify right side
    13,464x = 422,425,809
  5. Step 5: Solve for x
    x = 422,425,809/13,464
  6. Step 6: Final answer
    x = 31,374.47

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.