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Finding the Third Proportional to 4,272.75 and 9,477

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Solution

The third proportional to 4,272.75 and 9,477 is: 21,020.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,272.75 : 9,477 = 9,477 : x
  2. Step 2: Convert to fraction form
    4,272.75/9,477 = 9,477/x
  3. Step 3: Cross multiply
    4,272.75x = 9,477 × 9,477
  4. Step 4: Simplify right side
    4,272.75x = 89,813,529
  5. Step 5: Solve for x
    x = 89,813,529/4,272.75
  6. Step 6: Final answer
    x = 21,020.08

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.