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Finding the Fourth Proportional to 66,489.93, 99,682.38 and 33,191.64

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Solution

The fourth proportional to 66,489.93, 99,682.38 and 33,191.64 is: 49,761.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,489.93 : 99,682.38 = 33,191.64 : x
  2. Step 2: Convert to fraction form
    66,489.93/99,682.38 = 33,191.64/x
  3. Step 3: Cross multiply
    66,489.93x = 99,682.38 × 33,191.64
  4. Step 4: Simplify right side
    66,489.93x = 3,308,621,671.30
  5. Step 5: Solve for x
    x = 3,308,621,671.30/66,489.93
  6. Step 6: Final answer
    x = 49,761.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.