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Finding the Fourth Proportional to 66,183, 99,286.81 and 21,812.87

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Solution

The fourth proportional to 66,183, 99,286.81 and 21,812.87 is: 32,723.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,183 : 99,286.81 = 21,812.87 : x
  2. Step 2: Convert to fraction form
    66,183/99,286.81 = 21,812.87/x
  3. Step 3: Cross multiply
    66,183x = 99,286.81 × 21,812.87
  4. Step 4: Simplify right side
    66,183x = 2,165,730,170.18
  5. Step 5: Solve for x
    x = 2,165,730,170.18/66,183
  6. Step 6: Final answer
    x = 32,723.36

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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.