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Finding the Third Proportional to 20,765 and 31,202

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Solution

The third proportional to 20,765 and 31,202 is: 46,884.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765 : 31,202 = 31,202 : x
  2. Step 2: Convert to fraction form
    20,765/31,202 = 31,202/x
  3. Step 3: Cross multiply
    20,765x = 31,202 × 31,202
  4. Step 4: Simplify right side
    20,765x = 973,564,804
  5. Step 5: Solve for x
    x = 973,564,804/20,765
  6. Step 6: Final answer
    x = 46,884.89

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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.