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Finding the Fourth Proportional to 18,429.70, 27,648.60 and 5,947.60

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Solution

The fourth proportional to 18,429.70, 27,648.60 and 5,947.60 is: 8,922.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.70 : 27,648.60 = 5,947.60 : x
  2. Step 2: Convert to fraction form
    18,429.70/27,648.60 = 5,947.60/x
  3. Step 3: Cross multiply
    18,429.70x = 27,648.60 × 5,947.60
  4. Step 4: Simplify right side
    18,429.70x = 164,442,813.36
  5. Step 5: Solve for x
    x = 164,442,813.36/18,429.70
  6. Step 6: Final answer
    x = 8,922.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.