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Finding the Third Proportional to 11,795.50 and 18,411

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Solution

The third proportional to 11,795.50 and 18,411 is: 28,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,795.50 : 18,411 = 18,411 : x
  2. Step 2: Convert to fraction form
    11,795.50/18,411 = 18,411/x
  3. Step 3: Cross multiply
    11,795.50x = 18,411 × 18,411
  4. Step 4: Simplify right side
    11,795.50x = 338,964,921
  5. Step 5: Solve for x
    x = 338,964,921/11,795.50
  6. Step 6: Final answer
    x = 28,736.80

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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.