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Finding the Fourth Proportional to 18,619.94, 25,694.81 and 10,662.91

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Solution

The fourth proportional to 18,619.94, 25,694.81 and 10,662.91 is: 14,714.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.94 : 25,694.81 = 10,662.91 : x
  2. Step 2: Convert to fraction form
    18,619.94/25,694.81 = 10,662.91/x
  3. Step 3: Cross multiply
    18,619.94x = 25,694.81 × 10,662.91
  4. Step 4: Simplify right side
    18,619.94x = 273,981,446.50
  5. Step 5: Solve for x
    x = 273,981,446.50/18,619.94
  6. Step 6: Final answer
    x = 14,714.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.