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Finding the Fourth Proportional to 89,993.90, 124,190.82 and 49,158.06

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Solution

The fourth proportional to 89,993.90, 124,190.82 and 49,158.06 is: 67,837.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,993.90 : 124,190.82 = 49,158.06 : x
  2. Step 2: Convert to fraction form
    89,993.90/124,190.82 = 49,158.06/x
  3. Step 3: Cross multiply
    89,993.90x = 124,190.82 × 49,158.06
  4. Step 4: Simplify right side
    89,993.90x = 6,104,979,781.01
  5. Step 5: Solve for x
    x = 6,104,979,781.01/89,993.90
  6. Step 6: Final answer
    x = 67,837.71

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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.