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Finding the Third Proportional to 964 and 2,108

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Solution

The third proportional to 964 and 2,108 is: 4,609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    964 : 2,108 = 2,108 : x
  2. Step 2: Convert to fraction form
    964/2,108 = 2,108/x
  3. Step 3: Cross multiply
    964x = 2,108 × 2,108
  4. Step 4: Simplify right side
    964x = 4,443,664
  5. Step 5: Solve for x
    x = 4,443,664/964
  6. Step 6: Final answer
    x = 4,609.61

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.