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Finding the Fourth Proportional to 267,578.12, 400,579.85 and 178,610.96

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Solution

The fourth proportional to 267,578.12, 400,579.85 and 178,610.96 is: 267,390.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,578.12 : 400,579.85 = 178,610.96 : x
  2. Step 2: Convert to fraction form
    267,578.12/400,579.85 = 178,610.96/x
  3. Step 3: Cross multiply
    267,578.12x = 400,579.85 × 178,610.96
  4. Step 4: Simplify right side
    267,578.12x = 71,547,950,672.10
  5. Step 5: Solve for x
    x = 71,547,950,672.10/267,578.12
  6. Step 6: Final answer
    x = 267,390.89

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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.