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Finding the Fourth Proportional to 321,671.63, 482,367.26 and 108,399.80

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Solution

The fourth proportional to 321,671.63, 482,367.26 and 108,399.80 is: 162,552.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,671.63 : 482,367.26 = 108,399.80 : x
  2. Step 2: Convert to fraction form
    321,671.63/482,367.26 = 108,399.80/x
  3. Step 3: Cross multiply
    321,671.63x = 482,367.26 × 108,399.80
  4. Step 4: Simplify right side
    321,671.63x = 52,288,514,510.55
  5. Step 5: Solve for x
    x = 52,288,514,510.55/321,671.63
  6. Step 6: Final answer
    x = 162,552.46

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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.