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Finding the Fourth Proportional to 5,874.15, 8,811.11 and 1,431.84

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Solution

The fourth proportional to 5,874.15, 8,811.11 and 1,431.84 is: 2,147.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,874.15 : 8,811.11 = 1,431.84 : x
  2. Step 2: Convert to fraction form
    5,874.15/8,811.11 = 1,431.84/x
  3. Step 3: Cross multiply
    5,874.15x = 8,811.11 × 1,431.84
  4. Step 4: Simplify right side
    5,874.15x = 12,616,136.36
  5. Step 5: Solve for x
    x = 12,616,136.36/5,874.15
  6. Step 6: Final answer
    x = 2,147.74

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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.