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Finding the Fourth Proportional to 91,640.61, 137,461.11 and 25,081.41

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Solution

The fourth proportional to 91,640.61, 137,461.11 and 25,081.41 is: 37,622.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,640.61 : 137,461.11 = 25,081.41 : x
  2. Step 2: Convert to fraction form
    91,640.61/137,461.11 = 25,081.41/x
  3. Step 3: Cross multiply
    91,640.61x = 137,461.11 × 25,081.41
  4. Step 4: Simplify right side
    91,640.61x = 3,447,718,458.97
  5. Step 5: Solve for x
    x = 3,447,718,458.97/91,640.61
  6. Step 6: Final answer
    x = 37,622.17

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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.