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Finding the Third Proportional to 30,936 and 67,448

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Solution

The third proportional to 30,936 and 67,448 is: 147,053.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936 : 67,448 = 67,448 : x
  2. Step 2: Convert to fraction form
    30,936/67,448 = 67,448/x
  3. Step 3: Cross multiply
    30,936x = 67,448 × 67,448
  4. Step 4: Simplify right side
    30,936x = 4,549,232,704
  5. Step 5: Solve for x
    x = 4,549,232,704/30,936
  6. Step 6: Final answer
    x = 147,053.04

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.