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Finding the Fourth Proportional to 91,738.70, 137,608.05 and 60,573.95

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Solution

The fourth proportional to 91,738.70, 137,608.05 and 60,573.95 is: 90,860.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,738.70 : 137,608.05 = 60,573.95 : x
  2. Step 2: Convert to fraction form
    91,738.70/137,608.05 = 60,573.95/x
  3. Step 3: Cross multiply
    91,738.70x = 137,608.05 × 60,573.95
  4. Step 4: Simplify right side
    91,738.70x = 8,335,463,140.30
  5. Step 5: Solve for x
    x = 8,335,463,140.30/91,738.70
  6. Step 6: Final answer
    x = 90,860.93

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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.