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Finding the Third Proportional to 931 and 1,302

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Solution

The third proportional to 931 and 1,302 is: 1,820.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    931 : 1,302 = 1,302 : x
  2. Step 2: Convert to fraction form
    931/1,302 = 1,302/x
  3. Step 3: Cross multiply
    931x = 1,302 × 1,302
  4. Step 4: Simplify right side
    931x = 1,695,204
  5. Step 5: Solve for x
    x = 1,695,204/931
  6. Step 6: Final answer
    x = 1,820.84

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.