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Finding the Fourth Proportional to 8,591.90, 11,859.08 and 5,236.92

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Solution

The fourth proportional to 8,591.90, 11,859.08 and 5,236.92 is: 7,228.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.90 : 11,859.08 = 5,236.92 : x
  2. Step 2: Convert to fraction form
    8,591.90/11,859.08 = 5,236.92/x
  3. Step 3: Cross multiply
    8,591.90x = 11,859.08 × 5,236.92
  4. Step 4: Simplify right side
    8,591.90x = 62,105,027.05
  5. Step 5: Solve for x
    x = 62,105,027.05/8,591.90
  6. Step 6: Final answer
    x = 7,228.33

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Double scale
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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.