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Finding the Fourth Proportional to 236,345.51, 354,305.00 and 86,481.34

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Solution

The fourth proportional to 236,345.51, 354,305.00 and 86,481.34 is: 129,643.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,345.51 : 354,305.00 = 86,481.34 : x
  2. Step 2: Convert to fraction form
    236,345.51/354,305.00 = 86,481.34/x
  3. Step 3: Cross multiply
    236,345.51x = 354,305.00 × 86,481.34
  4. Step 4: Simplify right side
    236,345.51x = 30,640,770,499.14
  5. Step 5: Solve for x
    x = 30,640,770,499.14/236,345.51
  6. Step 6: Final answer
    x = 129,643.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.