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Finding the Fourth Proportional to 91,153.52, 125,791.61 and 50,866.85

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Solution

The fourth proportional to 91,153.52, 125,791.61 and 50,866.85 is: 70,196.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,153.52 : 125,791.61 = 50,866.85 : x
  2. Step 2: Convert to fraction form
    91,153.52/125,791.61 = 50,866.85/x
  3. Step 3: Cross multiply
    91,153.52x = 125,791.61 × 50,866.85
  4. Step 4: Simplify right side
    91,153.52x = 6,398,622,957.13
  5. Step 5: Solve for x
    x = 6,398,622,957.13/91,153.52
  6. Step 6: Final answer
    x = 70,196.11

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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.