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Finding the Third Proportional to 40,028.50 and 61,987

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Solution

The third proportional to 40,028.50 and 61,987 is: 95,991.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,028.50 : 61,987 = 61,987 : x
  2. Step 2: Convert to fraction form
    40,028.50/61,987 = 61,987/x
  3. Step 3: Cross multiply
    40,028.50x = 61,987 × 61,987
  4. Step 4: Simplify right side
    40,028.50x = 3,842,388,169
  5. Step 5: Solve for x
    x = 3,842,388,169/40,028.50
  6. Step 6: Final answer
    x = 95,991.31

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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.