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Finding the Fourth Proportional to 267,918.12, 401,596.56 and 90,363.96

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Solution

The fourth proportional to 267,918.12, 401,596.56 and 90,363.96 is: 135,451.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,918.12 : 401,596.56 = 90,363.96 : x
  2. Step 2: Convert to fraction form
    267,918.12/401,596.56 = 90,363.96/x
  3. Step 3: Cross multiply
    267,918.12x = 401,596.56 × 90,363.96
  4. Step 4: Simplify right side
    267,918.12x = 36,289,855,483.98
  5. Step 5: Solve for x
    x = 36,289,855,483.98/267,918.12
  6. Step 6: Final answer
    x = 135,451.29

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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.