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Finding the Third Proportional to 30,743.25 and 45,021

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Solution

The third proportional to 30,743.25 and 45,021 is: 65,929.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,743.25 : 45,021 = 45,021 : x
  2. Step 2: Convert to fraction form
    30,743.25/45,021 = 45,021/x
  3. Step 3: Cross multiply
    30,743.25x = 45,021 × 45,021
  4. Step 4: Simplify right side
    30,743.25x = 2,026,890,441
  5. Step 5: Solve for x
    x = 2,026,890,441/30,743.25
  6. Step 6: Final answer
    x = 65,929.61

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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.