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Finding the Third Proportional to 39,420 and 87,597

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Solution

The third proportional to 39,420 and 87,597 is: 194,653.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,420 : 87,597 = 87,597 : x
  2. Step 2: Convert to fraction form
    39,420/87,597 = 87,597/x
  3. Step 3: Cross multiply
    39,420x = 87,597 × 87,597
  4. Step 4: Simplify right side
    39,420x = 7,673,234,409
  5. Step 5: Solve for x
    x = 7,673,234,409/39,420
  6. Step 6: Final answer
    x = 194,653.33

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.