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Finding the Third Proportional to 52,212 and 76,431

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Solution

The third proportional to 52,212 and 76,431 is: 111,884.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,212 : 76,431 = 76,431 : x
  2. Step 2: Convert to fraction form
    52,212/76,431 = 76,431/x
  3. Step 3: Cross multiply
    52,212x = 76,431 × 76,431
  4. Step 4: Simplify right side
    52,212x = 5,841,697,761
  5. Step 5: Solve for x
    x = 5,841,697,761/52,212
  6. Step 6: Final answer
    x = 111,884.20

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.