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Finding the Fourth Proportional to 56,979.43, 85,469.21 and 14,859.48

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Solution

The fourth proportional to 56,979.43, 85,469.21 and 14,859.48 is: 22,289.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,979.43 : 85,469.21 = 14,859.48 : x
  2. Step 2: Convert to fraction form
    56,979.43/85,469.21 = 14,859.48/x
  3. Step 3: Cross multiply
    56,979.43x = 85,469.21 × 14,859.48
  4. Step 4: Simplify right side
    56,979.43x = 1,270,027,514.97
  5. Step 5: Solve for x
    x = 1,270,027,514.97/56,979.43
  6. Step 6: Final answer
    x = 22,289.23

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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.