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Finding the Third Proportional to 43,774 and 66,021

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Solution

The third proportional to 43,774 and 66,021 is: 99,574.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,774 : 66,021 = 66,021 : x
  2. Step 2: Convert to fraction form
    43,774/66,021 = 66,021/x
  3. Step 3: Cross multiply
    43,774x = 66,021 × 66,021
  4. Step 4: Simplify right side
    43,774x = 4,358,772,441
  5. Step 5: Solve for x
    x = 4,358,772,441/43,774
  6. Step 6: Final answer
    x = 99,574.46

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.