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Finding the Fourth Proportional to 395,947.20, 593,143.20 and 367,953.60

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Solution

The fourth proportional to 395,947.20, 593,143.20 and 367,953.60 is: 551,207.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,947.20 : 593,143.20 = 367,953.60 : x
  2. Step 2: Convert to fraction form
    395,947.20/593,143.20 = 367,953.60/x
  3. Step 3: Cross multiply
    395,947.20x = 593,143.20 × 367,953.60
  4. Step 4: Simplify right side
    395,947.20x = 218,249,175,755.52
  5. Step 5: Solve for x
    x = 218,249,175,755.52/395,947.20
  6. Step 6: Final answer
    x = 551,207.78

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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.