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Finding the Third Proportional to 1,471 and 3,155

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Solution

The third proportional to 1,471 and 3,155 is: 6,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471 : 3,155 = 3,155 : x
  2. Step 2: Convert to fraction form
    1,471/3,155 = 3,155/x
  3. Step 3: Cross multiply
    1,471x = 3,155 × 3,155
  4. Step 4: Simplify right side
    1,471x = 9,954,025
  5. Step 5: Solve for x
    x = 9,954,025/1,471
  6. Step 6: Final answer
    x = 6,766.84

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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.