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Finding the Fourth Proportional to 65,879.92, 90,914.58 and 35,665.27

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Solution

The fourth proportional to 65,879.92, 90,914.58 and 35,665.27 is: 49,218.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,879.92 : 90,914.58 = 35,665.27 : x
  2. Step 2: Convert to fraction form
    65,879.92/90,914.58 = 35,665.27/x
  3. Step 3: Cross multiply
    65,879.92x = 90,914.58 × 35,665.27
  4. Step 4: Simplify right side
    65,879.92x = 3,242,493,042.64
  5. Step 5: Solve for x
    x = 3,242,493,042.64/65,879.92
  6. Step 6: Final answer
    x = 49,218.23

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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.