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Finding the Fourth Proportional to 89,577.81, 123,620.31 and 49,294.49

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Solution

The fourth proportional to 89,577.81, 123,620.31 and 49,294.49 is: 68,028.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,577.81 : 123,620.31 = 49,294.49 : x
  2. Step 2: Convert to fraction form
    89,577.81/123,620.31 = 49,294.49/x
  3. Step 3: Cross multiply
    89,577.81x = 123,620.31 × 49,294.49
  4. Step 4: Simplify right side
    89,577.81x = 6,093,800,135.09
  5. Step 5: Solve for x
    x = 6,093,800,135.09/89,577.81
  6. Step 6: Final answer
    x = 68,028.01

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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.