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Finding the Fourth Proportional to 191,791.91, 287,687.46 and 51,550.54

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Solution

The fourth proportional to 191,791.91, 287,687.46 and 51,550.54 is: 77,325.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,791.91 : 287,687.46 = 51,550.54 : x
  2. Step 2: Convert to fraction form
    191,791.91/287,687.46 = 51,550.54/x
  3. Step 3: Cross multiply
    191,791.91x = 287,687.46 × 51,550.54
  4. Step 4: Simplify right side
    191,791.91x = 14,830,443,914.23
  5. Step 5: Solve for x
    x = 14,830,443,914.23/191,791.91
  6. Step 6: Final answer
    x = 77,325.70

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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.