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Finding the Third Proportional to 1,926 and 4,992

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Solution

The third proportional to 1,926 and 4,992 is: 12,938.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926 : 4,992 = 4,992 : x
  2. Step 2: Convert to fraction form
    1,926/4,992 = 4,992/x
  3. Step 3: Cross multiply
    1,926x = 4,992 × 4,992
  4. Step 4: Simplify right side
    1,926x = 24,920,064
  5. Step 5: Solve for x
    x = 24,920,064/1,926
  6. Step 6: Final answer
    x = 12,938.77

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Why These Related Problems?

These problems maintain the same ratio (2.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.