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Finding the Third Proportional to 2,016 and 4,240

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Solution

The third proportional to 2,016 and 4,240 is: 8,917.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,016 : 4,240 = 4,240 : x
  2. Step 2: Convert to fraction form
    2,016/4,240 = 4,240/x
  3. Step 3: Cross multiply
    2,016x = 4,240 × 4,240
  4. Step 4: Simplify right side
    2,016x = 17,977,600
  5. Step 5: Solve for x
    x = 17,977,600/2,016
  6. Step 6: Final answer
    x = 8,917.46

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.