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Finding the Fourth Proportional to 18,609.62, 25,680.58 and 10,651.64

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Solution

The fourth proportional to 18,609.62, 25,680.58 and 10,651.64 is: 14,698.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.62 : 25,680.58 = 10,651.64 : x
  2. Step 2: Convert to fraction form
    18,609.62/25,680.58 = 10,651.64/x
  3. Step 3: Cross multiply
    18,609.62x = 25,680.58 × 10,651.64
  4. Step 4: Simplify right side
    18,609.62x = 273,540,138.12
  5. Step 5: Solve for x
    x = 273,540,138.12/18,609.62
  6. Step 6: Final answer
    x = 14,698.86

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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.