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Finding the Third Proportional to 15,717 and 22,345.50

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Solution

The third proportional to 15,717 and 22,345.50 is: 31,769.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717 : 22,345.50 = 22,345.50 : x
  2. Step 2: Convert to fraction form
    15,717/22,345.50 = 22,345.50/x
  3. Step 3: Cross multiply
    15,717x = 22,345.50 × 22,345.50
  4. Step 4: Simplify right side
    15,717x = 499,321,370.25
  5. Step 5: Solve for x
    x = 499,321,370.25/15,717
  6. Step 6: Final answer
    x = 31,769.51

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.