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Finding the Third Proportional to 7,728 and 16,551.75

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Solution

The third proportional to 7,728 and 16,551.75 is: 35,450.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728 : 16,551.75 = 16,551.75 : x
  2. Step 2: Convert to fraction form
    7,728/16,551.75 = 16,551.75/x
  3. Step 3: Cross multiply
    7,728x = 16,551.75 × 16,551.75
  4. Step 4: Simplify right side
    7,728x = 273,960,428.06
  5. Step 5: Solve for x
    x = 273,960,428.06/7,728
  6. Step 6: Final answer
    x = 35,450.37

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.