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Finding the Fourth Proportional to 66,067.96, 91,249.53 and 43,507.84

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Solution

The fourth proportional to 66,067.96, 91,249.53 and 43,507.84 is: 60,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,067.96 : 91,249.53 = 43,507.84 : x
  2. Step 2: Convert to fraction form
    66,067.96/91,249.53 = 43,507.84/x
  3. Step 3: Cross multiply
    66,067.96x = 91,249.53 × 43,507.84
  4. Step 4: Simplify right side
    66,067.96x = 3,970,069,951.32
  5. Step 5: Solve for x
    x = 3,970,069,951.32/66,067.96
  6. Step 6: Final answer
    x = 60,090.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.