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Finding the Third Proportional to 2,520 and 5,423

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Solution

The third proportional to 2,520 and 5,423 is: 11,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520 : 5,423 = 5,423 : x
  2. Step 2: Convert to fraction form
    2,520/5,423 = 5,423/x
  3. Step 3: Cross multiply
    2,520x = 5,423 × 5,423
  4. Step 4: Simplify right side
    2,520x = 29,408,929
  5. Step 5: Solve for x
    x = 29,408,929/2,520
  6. Step 6: Final answer
    x = 11,670.21

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.