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Finding the Third Proportional to 12,592 and 15,408

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Solution

The third proportional to 12,592 and 15,408 is: 18,853.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,592 : 15,408 = 15,408 : x
  2. Step 2: Convert to fraction form
    12,592/15,408 = 15,408/x
  3. Step 3: Cross multiply
    12,592x = 15,408 × 15,408
  4. Step 4: Simplify right side
    12,592x = 237,406,464
  5. Step 5: Solve for x
    x = 237,406,464/12,592
  6. Step 6: Final answer
    x = 18,853.75

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.