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Finding the Third Proportional to 14,385.75 and 31,221.75

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Solution

The third proportional to 14,385.75 and 31,221.75 is: 67,761.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,385.75 : 31,221.75 = 31,221.75 : x
  2. Step 2: Convert to fraction form
    14,385.75/31,221.75 = 31,221.75/x
  3. Step 3: Cross multiply
    14,385.75x = 31,221.75 × 31,221.75
  4. Step 4: Simplify right side
    14,385.75x = 974,797,673.06
  5. Step 5: Solve for x
    x = 974,797,673.06/14,385.75
  6. Step 6: Final answer
    x = 67,761.34

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.