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Finding the Fourth Proportional to 18,609.62, 27,915.33 and 7,514.92

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Solution

The fourth proportional to 18,609.62, 27,915.33 and 7,514.92 is: 11,272.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.62 : 27,915.33 = 7,514.92 : x
  2. Step 2: Convert to fraction form
    18,609.62/27,915.33 = 7,514.92/x
  3. Step 3: Cross multiply
    18,609.62x = 27,915.33 × 7,514.92
  4. Step 4: Simplify right side
    18,609.62x = 209,781,471.72
  5. Step 5: Solve for x
    x = 209,781,471.72/18,609.62
  6. Step 6: Final answer
    x = 11,272.74

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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.