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Finding the Third Proportional to 13,603.50 and 18,441

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Solution

The third proportional to 13,603.50 and 18,441 is: 24,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.50 : 18,441 = 18,441 : x
  2. Step 2: Convert to fraction form
    13,603.50/18,441 = 18,441/x
  3. Step 3: Cross multiply
    13,603.50x = 18,441 × 18,441
  4. Step 4: Simplify right side
    13,603.50x = 340,070,481
  5. Step 5: Solve for x
    x = 340,070,481/13,603.50
  6. Step 6: Final answer
    x = 24,998.75

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.