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Finding the Fourth Proportional to 65,876.91, 90,910.45 and 35,662.26

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Solution

The fourth proportional to 65,876.91, 90,910.45 and 35,662.26 is: 49,214.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,876.91 : 90,910.45 = 35,662.26 : x
  2. Step 2: Convert to fraction form
    65,876.91/90,910.45 = 35,662.26/x
  3. Step 3: Cross multiply
    65,876.91x = 90,910.45 × 35,662.26
  4. Step 4: Simplify right side
    65,876.91x = 3,242,072,104.62
  5. Step 5: Solve for x
    x = 3,242,072,104.62/65,876.91
  6. Step 6: Final answer
    x = 49,214.09

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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.