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Finding the Fourth Proportional to 18,598.32, 27,898.24 and 4,747.68

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Solution

The fourth proportional to 18,598.32, 27,898.24 and 4,747.68 is: 7,121.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,598.32 : 27,898.24 = 4,747.68 : x
  2. Step 2: Convert to fraction form
    18,598.32/27,898.24 = 4,747.68/x
  3. Step 3: Cross multiply
    18,598.32x = 27,898.24 × 4,747.68
  4. Step 4: Simplify right side
    18,598.32x = 132,451,916.08
  5. Step 5: Solve for x
    x = 132,451,916.08/18,598.32
  6. Step 6: Final answer
    x = 7,121.71

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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.