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Finding the Fourth Proportional to 516,791.78, 775,299.48 and 156,933.08

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Solution

The fourth proportional to 516,791.78, 775,299.48 and 156,933.08 is: 235,433.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,791.78 : 775,299.48 = 156,933.08 : x
  2. Step 2: Convert to fraction form
    516,791.78/775,299.48 = 156,933.08/x
  3. Step 3: Cross multiply
    516,791.78x = 775,299.48 × 156,933.08
  4. Step 4: Simplify right side
    516,791.78x = 121,670,135,318.80
  5. Step 5: Solve for x
    x = 121,670,135,318.80/516,791.78
  6. Step 6: Final answer
    x = 235,433.57

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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.