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Finding the Third Proportional to 7,480 and 11,926

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Solution

The third proportional to 7,480 and 11,926 is: 19,014.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480 : 11,926 = 11,926 : x
  2. Step 2: Convert to fraction form
    7,480/11,926 = 11,926/x
  3. Step 3: Cross multiply
    7,480x = 11,926 × 11,926
  4. Step 4: Simplify right side
    7,480x = 142,229,476
  5. Step 5: Solve for x
    x = 142,229,476/7,480
  6. Step 6: Final answer
    x = 19,014.64

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.