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Finding the Third Proportional to 10,720.50 and 16,491

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Solution

The third proportional to 10,720.50 and 16,491 is: 25,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.50 : 16,491 = 16,491 : x
  2. Step 2: Convert to fraction form
    10,720.50/16,491 = 16,491/x
  3. Step 3: Cross multiply
    10,720.50x = 16,491 × 16,491
  4. Step 4: Simplify right side
    10,720.50x = 271,953,081
  5. Step 5: Solve for x
    x = 271,953,081/10,720.50
  6. Step 6: Final answer
    x = 25,367.57

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.