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Finding the Fourth Proportional to 18,624.42, 27,954.19 and 6,789.63

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Solution

The fourth proportional to 18,624.42, 27,954.19 and 6,789.63 is: 10,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.42 : 27,954.19 = 6,789.63 : x
  2. Step 2: Convert to fraction form
    18,624.42/27,954.19 = 6,789.63/x
  3. Step 3: Cross multiply
    18,624.42x = 27,954.19 × 6,789.63
  4. Step 4: Simplify right side
    18,624.42x = 189,798,590.08
  5. Step 5: Solve for x
    x = 189,798,590.08/18,624.42
  6. Step 6: Final answer
    x = 10,190.85

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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.