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Finding the Third Proportional to 5,909.88 and 9,021.75

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Solution

The third proportional to 5,909.88 and 9,021.75 is: 13,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,909.88 : 9,021.75 = 9,021.75 : x
  2. Step 2: Convert to fraction form
    5,909.88/9,021.75 = 9,021.75/x
  3. Step 3: Cross multiply
    5,909.88x = 9,021.75 × 9,021.75
  4. Step 4: Simplify right side
    5,909.88x = 81,391,973.06
  5. Step 5: Solve for x
    x = 81,391,973.06/5,909.88
  6. Step 6: Final answer
    x = 13,772.20

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.