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Finding the Third Proportional to 6,987.50 and 15,271

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Solution

The third proportional to 6,987.50 and 15,271 is: 33,374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.50 : 15,271 = 15,271 : x
  2. Step 2: Convert to fraction form
    6,987.50/15,271 = 15,271/x
  3. Step 3: Cross multiply
    6,987.50x = 15,271 × 15,271
  4. Step 4: Simplify right side
    6,987.50x = 233,203,441
  5. Step 5: Solve for x
    x = 233,203,441/6,987.50
  6. Step 6: Final answer
    x = 33,374.37

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.