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Finding the Third Proportional to 17,188.50 and 36,411

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Solution

The third proportional to 17,188.50 and 36,411 is: 77,130.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,188.50 : 36,411 = 36,411 : x
  2. Step 2: Convert to fraction form
    17,188.50/36,411 = 36,411/x
  3. Step 3: Cross multiply
    17,188.50x = 36,411 × 36,411
  4. Step 4: Simplify right side
    17,188.50x = 1,325,760,921
  5. Step 5: Solve for x
    x = 1,325,760,921/17,188.50
  6. Step 6: Final answer
    x = 77,130.69

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.