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Finding the Third Proportional to 4,920 and 10,575

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Solution

The third proportional to 4,920 and 10,575 is: 22,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920 : 10,575 = 10,575 : x
  2. Step 2: Convert to fraction form
    4,920/10,575 = 10,575/x
  3. Step 3: Cross multiply
    4,920x = 10,575 × 10,575
  4. Step 4: Simplify right side
    4,920x = 111,830,625
  5. Step 5: Solve for x
    x = 111,830,625/4,920
  6. Step 6: Final answer
    x = 22,729.80

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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.