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Finding the Fourth Proportional to 402,175.80, 603,263.70 and 267,456.60

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Solution

The fourth proportional to 402,175.80, 603,263.70 and 267,456.60 is: 401,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,175.80 : 603,263.70 = 267,456.60 : x
  2. Step 2: Convert to fraction form
    402,175.80/603,263.70 = 267,456.60/x
  3. Step 3: Cross multiply
    402,175.80x = 603,263.70 × 267,456.60
  4. Step 4: Simplify right side
    402,175.80x = 161,346,858,105.42
  5. Step 5: Solve for x
    x = 161,346,858,105.42/402,175.80
  6. Step 6: Final answer
    x = 401,184.90

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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.