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Finding the Fourth Proportional to 65,791.81, 90,793.65 and 37,112.82

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Solution

The fourth proportional to 65,791.81, 90,793.65 and 37,112.82 is: 51,216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,791.81 : 90,793.65 = 37,112.82 : x
  2. Step 2: Convert to fraction form
    65,791.81/90,793.65 = 37,112.82/x
  3. Step 3: Cross multiply
    65,791.81x = 90,793.65 × 37,112.82
  4. Step 4: Simplify right side
    65,791.81x = 3,369,607,935.62
  5. Step 5: Solve for x
    x = 3,369,607,935.62/65,791.81
  6. Step 6: Final answer
    x = 51,216.22

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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.