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Finding the Fourth Proportional to 5,879.10, 8,113.51 and 3,886.20

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Solution

The fourth proportional to 5,879.10, 8,113.51 and 3,886.20 is: 5,363.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,879.10 : 8,113.51 = 3,886.20 : x
  2. Step 2: Convert to fraction form
    5,879.10/8,113.51 = 3,886.20/x
  3. Step 3: Cross multiply
    5,879.10x = 8,113.51 × 3,886.20
  4. Step 4: Simplify right side
    5,879.10x = 31,530,722.56
  5. Step 5: Solve for x
    x = 31,530,722.56/5,879.10
  6. Step 6: Final answer
    x = 5,363.19

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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.