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Finding the Fourth Proportional to 986,860.46, 1,361,791.42 and 557,183

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Solution

The fourth proportional to 986,860.46, 1,361,791.42 and 557,183 is: 768,869.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,860.46 : 1,361,791.42 = 557,183 : x
  2. Step 2: Convert to fraction form
    986,860.46/1,361,791.42 = 557,183/x
  3. Step 3: Cross multiply
    986,860.46x = 1,361,791.42 × 557,183
  4. Step 4: Simplify right side
    986,860.46x = 758,767,028,769.86
  5. Step 5: Solve for x
    x = 758,767,028,769.86/986,860.46
  6. Step 6: Final answer
    x = 768,869.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.