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Finding the Fourth Proportional to 91,927.80, 137,745.90 and 60,726.60

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Solution

The fourth proportional to 91,927.80, 137,745.90 and 60,726.60 is: 90,993.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,927.80 : 137,745.90 = 60,726.60 : x
  2. Step 2: Convert to fraction form
    91,927.80/137,745.90 = 60,726.60/x
  3. Step 3: Cross multiply
    91,927.80x = 137,745.90 × 60,726.60
  4. Step 4: Simplify right side
    91,927.80x = 8,364,840,170.94
  5. Step 5: Solve for x
    x = 8,364,840,170.94/91,927.80
  6. Step 6: Final answer
    x = 90,993.59

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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.