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Finding the Third Proportional to 28,024 and 43,389

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Solution

The third proportional to 28,024 and 43,389 is: 67,178.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,024 : 43,389 = 43,389 : x
  2. Step 2: Convert to fraction form
    28,024/43,389 = 43,389/x
  3. Step 3: Cross multiply
    28,024x = 43,389 × 43,389
  4. Step 4: Simplify right side
    28,024x = 1,882,605,321
  5. Step 5: Solve for x
    x = 1,882,605,321/28,024
  6. Step 6: Final answer
    x = 67,178.32

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.