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Finding the Fourth Proportional to 66,820.82, 92,213.19 and 36,606.30

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Solution

The fourth proportional to 66,820.82, 92,213.19 and 36,606.30 is: 50,516.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,820.82 : 92,213.19 = 36,606.30 : x
  2. Step 2: Convert to fraction form
    66,820.82/92,213.19 = 36,606.30/x
  3. Step 3: Cross multiply
    66,820.82x = 92,213.19 × 36,606.30
  4. Step 4: Simplify right side
    66,820.82x = 3,375,583,697.10
  5. Step 5: Solve for x
    x = 3,375,583,697.10/66,820.82
  6. Step 6: Final answer
    x = 50,516.95

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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.