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Finding the Fourth Proportional to 363,989.80, 545,855.10 and 164,405.80

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Solution

The fourth proportional to 363,989.80, 545,855.10 and 164,405.80 is: 246,550.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,989.80 : 545,855.10 = 164,405.80 : x
  2. Step 2: Convert to fraction form
    363,989.80/545,855.10 = 164,405.80/x
  3. Step 3: Cross multiply
    363,989.80x = 545,855.10 × 164,405.80
  4. Step 4: Simplify right side
    363,989.80x = 89,741,744,399.58
  5. Step 5: Solve for x
    x = 89,741,744,399.58/363,989.80
  6. Step 6: Final answer
    x = 246,550.16

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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.