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Finding the Fourth Proportional to 8,107.44, 11,188.28 and 4,381.44

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Solution

The fourth proportional to 8,107.44, 11,188.28 and 4,381.44 is: 6,046.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.44 : 11,188.28 = 4,381.44 : x
  2. Step 2: Convert to fraction form
    8,107.44/11,188.28 = 4,381.44/x
  3. Step 3: Cross multiply
    8,107.44x = 11,188.28 × 4,381.44
  4. Step 4: Simplify right side
    8,107.44x = 49,020,744.08
  5. Step 5: Solve for x
    x = 49,020,744.08/8,107.44
  6. Step 6: Final answer
    x = 6,046.39

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Half scale
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Double scale
Find fourth proportional to 8,108.44, 11,189.66 and 4,382.44
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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.