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Finding the Third Proportional to 12,997.13 and 18,586.50

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Solution

The third proportional to 12,997.13 and 18,586.50 is: 26,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997.13 : 18,586.50 = 18,586.50 : x
  2. Step 2: Convert to fraction form
    12,997.13/18,586.50 = 18,586.50/x
  3. Step 3: Cross multiply
    12,997.13x = 18,586.50 × 18,586.50
  4. Step 4: Simplify right side
    12,997.13x = 345,457,982.25
  5. Step 5: Solve for x
    x = 345,457,982.25/12,997.13
  6. Step 6: Final answer
    x = 26,579.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.