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Finding the Third Proportional to 5,269.13 and 7,890

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Solution

The third proportional to 5,269.13 and 7,890 is: 11,814.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.13 : 7,890 = 7,890 : x
  2. Step 2: Convert to fraction form
    5,269.13/7,890 = 7,890/x
  3. Step 3: Cross multiply
    5,269.13x = 7,890 × 7,890
  4. Step 4: Simplify right side
    5,269.13x = 62,252,100
  5. Step 5: Solve for x
    x = 62,252,100/5,269.13
  6. Step 6: Final answer
    x = 11,814.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.