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Finding the Fourth Proportional to 91,805.20, 137,721.67 and 32,626.80

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Solution

The fourth proportional to 91,805.20, 137,721.67 and 32,626.80 is: 48,945.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,805.20 : 137,721.67 = 32,626.80 : x
  2. Step 2: Convert to fraction form
    91,805.20/137,721.67 = 32,626.80/x
  3. Step 3: Cross multiply
    91,805.20x = 137,721.67 × 32,626.80
  4. Step 4: Simplify right side
    91,805.20x = 4,493,417,382.76
  5. Step 5: Solve for x
    x = 4,493,417,382.76/91,805.20
  6. Step 6: Final answer
    x = 48,945.13

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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.