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Finding the Fourth Proportional to 66,891.22, 92,372.20 and 43,059.20

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Solution

The fourth proportional to 66,891.22, 92,372.20 and 43,059.20 is: 59,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,891.22 : 92,372.20 = 43,059.20 : x
  2. Step 2: Convert to fraction form
    66,891.22/92,372.20 = 43,059.20/x
  3. Step 3: Cross multiply
    66,891.22x = 92,372.20 × 43,059.20
  4. Step 4: Simplify right side
    66,891.22x = 3,977,472,464.73
  5. Step 5: Solve for x
    x = 3,977,472,464.73/66,891.22
  6. Step 6: Final answer
    x = 59,461.80

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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.