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Finding the Fourth Proportional to 18,694.91, 25,746.49 and 18,286.67

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Solution

The fourth proportional to 18,694.91, 25,746.49 and 18,286.67 is: 25,184.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.91 : 25,746.49 = 18,286.67 : x
  2. Step 2: Convert to fraction form
    18,694.91/25,746.49 = 18,286.67/x
  3. Step 3: Cross multiply
    18,694.91x = 25,746.49 × 18,286.67
  4. Step 4: Simplify right side
    18,694.91x = 470,817,653.51
  5. Step 5: Solve for x
    x = 470,817,653.51/18,694.91
  6. Step 6: Final answer
    x = 25,184.27

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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.