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Finding the Third Proportional to 66,515.55 and 144,102.80

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Solution

The third proportional to 66,515.55 and 144,102.80 is: 312,191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.55 : 144,102.80 = 144,102.80 : x
  2. Step 2: Convert to fraction form
    66,515.55/144,102.80 = 144,102.80/x
  3. Step 3: Cross multiply
    66,515.55x = 144,102.80 × 144,102.80
  4. Step 4: Simplify right side
    66,515.55x = 20,765,616,067.20
  5. Step 5: Solve for x
    x = 20,765,616,067.20/66,515.55
  6. Step 6: Final answer
    x = 312,191.88

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