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Finding the Third Proportional to 31,395 and 47,092.50

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Solution

The third proportional to 31,395 and 47,092.50 is: 70,638.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,395 : 47,092.50 = 47,092.50 : x
  2. Step 2: Convert to fraction form
    31,395/47,092.50 = 47,092.50/x
  3. Step 3: Cross multiply
    31,395x = 47,092.50 × 47,092.50
  4. Step 4: Simplify right side
    31,395x = 2,217,703,556.25
  5. Step 5: Solve for x
    x = 2,217,703,556.25/31,395
  6. Step 6: Final answer
    x = 70,638.75

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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.