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Finding the Fourth Proportional to 363,405.80, 544,331.10 and 324,007.40

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Solution

The fourth proportional to 363,405.80, 544,331.10 and 324,007.40 is: 485,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,405.80 : 544,331.10 = 324,007.40 : x
  2. Step 2: Convert to fraction form
    363,405.80/544,331.10 = 324,007.40/x
  3. Step 3: Cross multiply
    363,405.80x = 544,331.10 × 324,007.40
  4. Step 4: Simplify right side
    363,405.80x = 176,367,304,450.14
  5. Step 5: Solve for x
    x = 176,367,304,450.14/363,405.80
  6. Step 6: Final answer
    x = 485,317.80

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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.