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Finding the Fourth Proportional to 225,718.07, 338,597.91 and 81,659.93

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Solution

The fourth proportional to 225,718.07, 338,597.91 and 81,659.93 is: 122,497.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,718.07 : 338,597.91 = 81,659.93 : x
  2. Step 2: Convert to fraction form
    225,718.07/338,597.91 = 81,659.93/x
  3. Step 3: Cross multiply
    225,718.07x = 338,597.91 × 81,659.93
  4. Step 4: Simplify right side
    225,718.07x = 27,649,879,935.76
  5. Step 5: Solve for x
    x = 27,649,879,935.76/225,718.07
  6. Step 6: Final answer
    x = 122,497.42

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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.