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Finding the Third Proportional to 910 and 1,964

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Solution

The third proportional to 910 and 1,964 is: 4,238.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    910 : 1,964 = 1,964 : x
  2. Step 2: Convert to fraction form
    910/1,964 = 1,964/x
  3. Step 3: Cross multiply
    910x = 1,964 × 1,964
  4. Step 4: Simplify right side
    910x = 3,857,296
  5. Step 5: Solve for x
    x = 3,857,296/910
  6. Step 6: Final answer
    x = 4,238.79

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.