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Finding the Third Proportional to 3,158 and 4,923

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Solution

The third proportional to 3,158 and 4,923 is: 7,674.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158 : 4,923 = 4,923 : x
  2. Step 2: Convert to fraction form
    3,158/4,923 = 4,923/x
  3. Step 3: Cross multiply
    3,158x = 4,923 × 4,923
  4. Step 4: Simplify right side
    3,158x = 24,235,929
  5. Step 5: Solve for x
    x = 24,235,929/3,158
  6. Step 6: Final answer
    x = 7,674.46

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.