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Finding the Third Proportional to 14,447.25 and 31,221

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Solution

The third proportional to 14,447.25 and 31,221 is: 67,469.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,447.25 : 31,221 = 31,221 : x
  2. Step 2: Convert to fraction form
    14,447.25/31,221 = 31,221/x
  3. Step 3: Cross multiply
    14,447.25x = 31,221 × 31,221
  4. Step 4: Simplify right side
    14,447.25x = 974,750,841
  5. Step 5: Solve for x
    x = 974,750,841/14,447.25
  6. Step 6: Final answer
    x = 67,469.65

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.