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Finding the Fourth Proportional to 267,397.70, 401,096.55 and 207,911.30

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Solution

The fourth proportional to 267,397.70, 401,096.55 and 207,911.30 is: 311,866.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,397.70 : 401,096.55 = 207,911.30 : x
  2. Step 2: Convert to fraction form
    267,397.70/401,096.55 = 207,911.30/x
  3. Step 3: Cross multiply
    267,397.70x = 401,096.55 × 207,911.30
  4. Step 4: Simplify right side
    267,397.70x = 83,392,505,136.02
  5. Step 5: Solve for x
    x = 83,392,505,136.02/267,397.70
  6. Step 6: Final answer
    x = 311,866.95

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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.