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Finding the Fourth Proportional to 8,153.31, 11,251.52 and 4,427.31

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Solution

The fourth proportional to 8,153.31, 11,251.52 and 4,427.31 is: 6,109.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,153.31 : 11,251.52 = 4,427.31 : x
  2. Step 2: Convert to fraction form
    8,153.31/11,251.52 = 4,427.31/x
  3. Step 3: Cross multiply
    8,153.31x = 11,251.52 × 4,427.31
  4. Step 4: Simplify right side
    8,153.31x = 49,813,944.87
  5. Step 5: Solve for x
    x = 49,813,944.87/8,153.31
  6. Step 6: Final answer
    x = 6,109.66

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Half scale
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Double scale
Find fourth proportional to 8,154.31, 11,252.89 and 4,428.31
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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.