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Finding the Third Proportional to 16,915 and 36,711.50

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Solution

The third proportional to 16,915 and 36,711.50 is: 79,676.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,915 : 36,711.50 = 36,711.50 : x
  2. Step 2: Convert to fraction form
    16,915/36,711.50 = 36,711.50/x
  3. Step 3: Cross multiply
    16,915x = 36,711.50 × 36,711.50
  4. Step 4: Simplify right side
    16,915x = 1,347,734,232.25
  5. Step 5: Solve for x
    x = 1,347,734,232.25/16,915
  6. Step 6: Final answer
    x = 79,676.87

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.