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Finding the Third Proportional to 956 and 2,120

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Solution

The third proportional to 956 and 2,120 is: 4,701.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    956 : 2,120 = 2,120 : x
  2. Step 2: Convert to fraction form
    956/2,120 = 2,120/x
  3. Step 3: Cross multiply
    956x = 2,120 × 2,120
  4. Step 4: Simplify right side
    956x = 4,494,400
  5. Step 5: Solve for x
    x = 4,494,400/956
  6. Step 6: Final answer
    x = 4,701.26

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.