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Finding the Fourth Proportional to 91,230.61, 125,891.97 and 50,392.93

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Solution

The fourth proportional to 91,230.61, 125,891.97 and 50,392.93 is: 69,538.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,230.61 : 125,891.97 = 50,392.93 : x
  2. Step 2: Convert to fraction form
    91,230.61/125,891.97 = 50,392.93/x
  3. Step 3: Cross multiply
    91,230.61x = 125,891.97 × 50,392.93
  4. Step 4: Simplify right side
    91,230.61x = 6,344,065,231.77
  5. Step 5: Solve for x
    x = 6,344,065,231.77/91,230.61
  6. Step 6: Final answer
    x = 69,538.78

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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.