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Finding the Third Proportional to 7,269.75 and 15,921

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Solution

The third proportional to 7,269.75 and 15,921 is: 34,867.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,269.75 : 15,921 = 15,921 : x
  2. Step 2: Convert to fraction form
    7,269.75/15,921 = 15,921/x
  3. Step 3: Cross multiply
    7,269.75x = 15,921 × 15,921
  4. Step 4: Simplify right side
    7,269.75x = 253,478,241
  5. Step 5: Solve for x
    x = 253,478,241/7,269.75
  6. Step 6: Final answer
    x = 34,867.53

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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.