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Finding the Third Proportional to 5,240 and 9,643

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Solution

The third proportional to 5,240 and 9,643 is: 17,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240 : 9,643 = 9,643 : x
  2. Step 2: Convert to fraction form
    5,240/9,643 = 9,643/x
  3. Step 3: Cross multiply
    5,240x = 9,643 × 9,643
  4. Step 4: Simplify right side
    5,240x = 92,987,449
  5. Step 5: Solve for x
    x = 92,987,449/5,240
  6. Step 6: Final answer
    x = 17,745.70

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.