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Finding the Third Proportional to 4,787.50 and 7,186

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Solution

The third proportional to 4,787.50 and 7,186 is: 10,786.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.50 : 7,186 = 7,186 : x
  2. Step 2: Convert to fraction form
    4,787.50/7,186 = 7,186/x
  3. Step 3: Cross multiply
    4,787.50x = 7,186 × 7,186
  4. Step 4: Simplify right side
    4,787.50x = 51,638,596
  5. Step 5: Solve for x
    x = 51,638,596/4,787.50
  6. Step 6: Final answer
    x = 10,786.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.