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Finding the Fourth Proportional to 551,189.81, 826,902.78 and 191,371.92

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Solution

The fourth proportional to 551,189.81, 826,902.78 and 191,371.92 is: 287,098.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,189.81 : 826,902.78 = 191,371.92 : x
  2. Step 2: Convert to fraction form
    551,189.81/826,902.78 = 191,371.92/x
  3. Step 3: Cross multiply
    551,189.81x = 826,902.78 × 191,371.92
  4. Step 4: Simplify right side
    551,189.81x = 158,245,968,843.41
  5. Step 5: Solve for x
    x = 158,245,968,843.41/551,189.81
  6. Step 6: Final answer
    x = 287,098.86

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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.