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Finding the Third Proportional to 30,673.50 and 67,377

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Solution

The third proportional to 30,673.50 and 67,377 is: 147,999.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,673.50 : 67,377 = 67,377 : x
  2. Step 2: Convert to fraction form
    30,673.50/67,377 = 67,377/x
  3. Step 3: Cross multiply
    30,673.50x = 67,377 × 67,377
  4. Step 4: Simplify right side
    30,673.50x = 4,539,660,129
  5. Step 5: Solve for x
    x = 4,539,660,129/30,673.50
  6. Step 6: Final answer
    x = 147,999.42

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.