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Finding the Fourth Proportional to 89,805.48, 123,945.99 and 53,508.57

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Solution

The fourth proportional to 89,805.48, 123,945.99 and 53,508.57 is: 73,850.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,805.48 : 123,945.99 = 53,508.57 : x
  2. Step 2: Convert to fraction form
    89,805.48/123,945.99 = 53,508.57/x
  3. Step 3: Cross multiply
    89,805.48x = 123,945.99 × 53,508.57
  4. Step 4: Simplify right side
    89,805.48x = 6,632,172,682.13
  5. Step 5: Solve for x
    x = 6,632,172,682.13/89,805.48
  6. Step 6: Final answer
    x = 73,850.42

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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.