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Finding the Third Proportional to 931 and 1,301

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Solution

The third proportional to 931 and 1,301 is: 1,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    931 : 1,301 = 1,301 : x
  2. Step 2: Convert to fraction form
    931/1,301 = 1,301/x
  3. Step 3: Cross multiply
    931x = 1,301 × 1,301
  4. Step 4: Simplify right side
    931x = 1,692,601
  5. Step 5: Solve for x
    x = 1,692,601/931
  6. Step 6: Final answer
    x = 1,818.05

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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.