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Finding the Fourth Proportional to 99,163.54, 136,831.92 and 58,329.52

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Solution

The fourth proportional to 99,163.54, 136,831.92 and 58,329.52 is: 80,486.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,163.54 : 136,831.92 = 58,329.52 : x
  2. Step 2: Convert to fraction form
    99,163.54/136,831.92 = 58,329.52/x
  3. Step 3: Cross multiply
    99,163.54x = 136,831.92 × 58,329.52
  4. Step 4: Simplify right side
    99,163.54x = 7,981,339,653.46
  5. Step 5: Solve for x
    x = 7,981,339,653.46/99,163.54
  6. Step 6: Final answer
    x = 80,486.63

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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.