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Finding the Fourth Proportional to 363,405.80, 544,071.90 and 321,933.80

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Solution

The fourth proportional to 363,405.80, 544,071.90 and 321,933.80 is: 481,982.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,405.80 : 544,071.90 = 321,933.80 : x
  2. Step 2: Convert to fraction form
    363,405.80/544,071.90 = 321,933.80/x
  3. Step 3: Cross multiply
    363,405.80x = 544,071.90 × 321,933.80
  4. Step 4: Simplify right side
    363,405.80x = 175,155,134,240.22
  5. Step 5: Solve for x
    x = 175,155,134,240.22/363,405.80
  6. Step 6: Final answer
    x = 481,982.22

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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.