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Finding the Fourth Proportional to 393,406.44, 589,582.58 and 368,212.20

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Solution

The fourth proportional to 393,406.44, 589,582.58 and 368,212.20 is: 551,824.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,406.44 : 589,582.58 = 368,212.20 : x
  2. Step 2: Convert to fraction form
    393,406.44/589,582.58 = 368,212.20/x
  3. Step 3: Cross multiply
    393,406.44x = 589,582.58 × 368,212.20
  4. Step 4: Simplify right side
    393,406.44x = 217,091,498,863.48
  5. Step 5: Solve for x
    x = 217,091,498,863.48/393,406.44
  6. Step 6: Final answer
    x = 551,824.97

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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.