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Finding the Third Proportional to 935.50 and 1,931

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Solution

The third proportional to 935.50 and 1,931 is: 3,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.50 : 1,931 = 1,931 : x
  2. Step 2: Convert to fraction form
    935.50/1,931 = 1,931/x
  3. Step 3: Cross multiply
    935.50x = 1,931 × 1,931
  4. Step 4: Simplify right side
    935.50x = 3,728,761
  5. Step 5: Solve for x
    x = 3,728,761/935.50
  6. Step 6: Final answer
    x = 3,985.85

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.