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Finding the Fourth Proportional to 18,624.60, 27,934.20 and 5,475.60

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Solution

The fourth proportional to 18,624.60, 27,934.20 and 5,475.60 is: 8,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.60 : 27,934.20 = 5,475.60 : x
  2. Step 2: Convert to fraction form
    18,624.60/27,934.20 = 5,475.60/x
  3. Step 3: Cross multiply
    18,624.60x = 27,934.20 × 5,475.60
  4. Step 4: Simplify right side
    18,624.60x = 152,956,505.52
  5. Step 5: Solve for x
    x = 152,956,505.52/18,624.60
  6. Step 6: Final answer
    x = 8,212.61

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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.