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Finding the Fourth Proportional to 18,624.61, 27,930.91 and 6,141.73

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Solution

The fourth proportional to 18,624.61, 27,930.91 and 6,141.73 is: 9,210.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.61 : 27,930.91 = 6,141.73 : x
  2. Step 2: Convert to fraction form
    18,624.61/27,930.91 = 6,141.73/x
  3. Step 3: Cross multiply
    18,624.61x = 27,930.91 × 6,141.73
  4. Step 4: Simplify right side
    18,624.61x = 171,544,107.87
  5. Step 5: Solve for x
    x = 171,544,107.87/18,624.61
  6. Step 6: Final answer
    x = 9,210.61

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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.