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Finding the Third Proportional to 7,087.50 and 15,219

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Solution

The third proportional to 7,087.50 and 15,219 is: 32,679.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,087.50 : 15,219 = 15,219 : x
  2. Step 2: Convert to fraction form
    7,087.50/15,219 = 15,219/x
  3. Step 3: Cross multiply
    7,087.50x = 15,219 × 15,219
  4. Step 4: Simplify right side
    7,087.50x = 231,617,961
  5. Step 5: Solve for x
    x = 231,617,961/7,087.50
  6. Step 6: Final answer
    x = 32,679.78

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.