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Finding the Fourth Proportional to 79,725.80, 119,514.83 and 44,640.86

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Solution

The fourth proportional to 79,725.80, 119,514.83 and 44,640.86 is: 66,919.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,725.80 : 119,514.83 = 44,640.86 : x
  2. Step 2: Convert to fraction form
    79,725.80/119,514.83 = 44,640.86/x
  3. Step 3: Cross multiply
    79,725.80x = 119,514.83 × 44,640.86
  4. Step 4: Simplify right side
    79,725.80x = 5,335,243,973.18
  5. Step 5: Solve for x
    x = 5,335,243,973.18/79,725.80
  6. Step 6: Final answer
    x = 66,919.92

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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.