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Finding the Third Proportional to 3,989.25 and 6,091.88

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Solution

The third proportional to 3,989.25 and 6,091.88 is: 9,302.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.25 : 6,091.88 = 6,091.88 : x
  2. Step 2: Convert to fraction form
    3,989.25/6,091.88 = 6,091.88/x
  3. Step 3: Cross multiply
    3,989.25x = 6,091.88 × 6,091.88
  4. Step 4: Simplify right side
    3,989.25x = 37,110,941.02
  5. Step 5: Solve for x
    x = 37,110,941.02/3,989.25
  6. Step 6: Final answer
    x = 9,302.74

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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.