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Finding the Fourth Proportional to 395,912.80, 593,869.20 and 367,919.20

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Solution

The fourth proportional to 395,912.80, 593,869.20 and 367,919.20 is: 551,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,912.80 : 593,869.20 = 367,919.20 : x
  2. Step 2: Convert to fraction form
    395,912.80/593,869.20 = 367,919.20/x
  3. Step 3: Cross multiply
    395,912.80x = 593,869.20 × 367,919.20
  4. Step 4: Simplify right side
    395,912.80x = 218,495,880,968.64
  5. Step 5: Solve for x
    x = 218,495,880,968.64/395,912.80
  6. Step 6: Final answer
    x = 551,878.80

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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.