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Finding the Third Proportional to 11,181.75 and 15,132

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Solution

The third proportional to 11,181.75 and 15,132 is: 20,477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.75 : 15,132 = 15,132 : x
  2. Step 2: Convert to fraction form
    11,181.75/15,132 = 15,132/x
  3. Step 3: Cross multiply
    11,181.75x = 15,132 × 15,132
  4. Step 4: Simplify right side
    11,181.75x = 228,977,424
  5. Step 5: Solve for x
    x = 228,977,424/11,181.75
  6. Step 6: Final answer
    x = 20,477.78

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.