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Finding the Fourth Proportional to 8,706.10, 13,057.61 and 3,961.15

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Solution

The fourth proportional to 8,706.10, 13,057.61 and 3,961.15 is: 5,941.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.10 : 13,057.61 = 3,961.15 : x
  2. Step 2: Convert to fraction form
    8,706.10/13,057.61 = 3,961.15/x
  3. Step 3: Cross multiply
    8,706.10x = 13,057.61 × 3,961.15
  4. Step 4: Simplify right side
    8,706.10x = 51,723,172.85
  5. Step 5: Solve for x
    x = 51,723,172.85/8,706.10
  6. Step 6: Final answer
    x = 5,941.03

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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.