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Finding the Fourth Proportional to 367,907.20, 551,860.80 and 273,428.80

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Solution

The fourth proportional to 367,907.20, 551,860.80 and 273,428.80 is: 410,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,907.20 : 551,860.80 = 273,428.80 : x
  2. Step 2: Convert to fraction form
    367,907.20/551,860.80 = 273,428.80/x
  3. Step 3: Cross multiply
    367,907.20x = 551,860.80 × 273,428.80
  4. Step 4: Simplify right side
    367,907.20x = 150,894,636,311.04
  5. Step 5: Solve for x
    x = 150,894,636,311.04/367,907.20
  6. Step 6: Final answer
    x = 410,143.20

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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.