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Finding the Fourth Proportional to 267,361.05, 401,043.86 and 213,920.60

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Solution

The fourth proportional to 267,361.05, 401,043.86 and 213,920.60 is: 320,882.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,361.05 : 401,043.86 = 213,920.60 : x
  2. Step 2: Convert to fraction form
    267,361.05/401,043.86 = 213,920.60/x
  3. Step 3: Cross multiply
    267,361.05x = 401,043.86 × 213,920.60
  4. Step 4: Simplify right side
    267,361.05x = 85,791,540,884.90
  5. Step 5: Solve for x
    x = 85,791,540,884.90/267,361.05
  6. Step 6: Final answer
    x = 320,882.72

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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.