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Finding the Fourth Proportional to 18,424.70, 27,641.02 and 5,945.44

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Solution

The fourth proportional to 18,424.70, 27,641.02 and 5,945.44 is: 8,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.70 : 27,641.02 = 5,945.44 : x
  2. Step 2: Convert to fraction form
    18,424.70/27,641.02 = 5,945.44/x
  3. Step 3: Cross multiply
    18,424.70x = 27,641.02 × 5,945.44
  4. Step 4: Simplify right side
    18,424.70x = 164,338,025.95
  5. Step 5: Solve for x
    x = 164,338,025.95/18,424.70
  6. Step 6: Final answer
    x = 8,919.44

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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.