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Finding the Fourth Proportional to 444,721.40, 667,082.10 and 267,428.60

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Solution

The fourth proportional to 444,721.40, 667,082.10 and 267,428.60 is: 401,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,721.40 : 667,082.10 = 267,428.60 : x
  2. Step 2: Convert to fraction form
    444,721.40/667,082.10 = 267,428.60/x
  3. Step 3: Cross multiply
    444,721.40x = 667,082.10 × 267,428.60
  4. Step 4: Simplify right side
    444,721.40x = 178,396,832,088.06
  5. Step 5: Solve for x
    x = 178,396,832,088.06/444,721.40
  6. Step 6: Final answer
    x = 401,142.90

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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.