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Finding the Fourth Proportional to 5,869.75, 8,100.21 and 3,217.16

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Solution

The fourth proportional to 5,869.75, 8,100.21 and 3,217.16 is: 4,439.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,869.75 : 8,100.21 = 3,217.16 : x
  2. Step 2: Convert to fraction form
    5,869.75/8,100.21 = 3,217.16/x
  3. Step 3: Cross multiply
    5,869.75x = 8,100.21 × 3,217.16
  4. Step 4: Simplify right side
    5,869.75x = 26,059,639.15
  5. Step 5: Solve for x
    x = 26,059,639.15/5,869.75
  6. Step 6: Final answer
    x = 4,439.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.