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Finding the Third Proportional to 75,214.50 and 163,920

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Solution

The third proportional to 75,214.50 and 163,920 is: 357,241.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,214.50 : 163,920 = 163,920 : x
  2. Step 2: Convert to fraction form
    75,214.50/163,920 = 163,920/x
  3. Step 3: Cross multiply
    75,214.50x = 163,920 × 163,920
  4. Step 4: Simplify right side
    75,214.50x = 26,869,766,400
  5. Step 5: Solve for x
    x = 26,869,766,400/75,214.50
  6. Step 6: Final answer
    x = 357,241.84

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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.