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Finding the Third Proportional to 7,404 and 11,925

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Solution

The third proportional to 7,404 and 11,925 is: 19,206.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,404 : 11,925 = 11,925 : x
  2. Step 2: Convert to fraction form
    7,404/11,925 = 11,925/x
  3. Step 3: Cross multiply
    7,404x = 11,925 × 11,925
  4. Step 4: Simplify right side
    7,404x = 142,205,625
  5. Step 5: Solve for x
    x = 142,205,625/7,404
  6. Step 6: Final answer
    x = 19,206.59

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.