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Finding the Third Proportional to 4,783 and 7,171

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Solution

The third proportional to 4,783 and 7,171 is: 10,751.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,783 : 7,171 = 7,171 : x
  2. Step 2: Convert to fraction form
    4,783/7,171 = 7,171/x
  3. Step 3: Cross multiply
    4,783x = 7,171 × 7,171
  4. Step 4: Simplify right side
    4,783x = 51,423,241
  5. Step 5: Solve for x
    x = 51,423,241/4,783
  6. Step 6: Final answer
    x = 10,751.25

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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.