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Finding the Fourth Proportional to 88,561.97, 132,255.93 and 77,831.09

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Solution

The fourth proportional to 88,561.97, 132,255.93 and 77,831.09 is: 116,230.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,561.97 : 132,255.93 = 77,831.09 : x
  2. Step 2: Convert to fraction form
    88,561.97/132,255.93 = 77,831.09/x
  3. Step 3: Cross multiply
    88,561.97x = 132,255.93 × 77,831.09
  4. Step 4: Simplify right side
    88,561.97x = 10,293,622,529.58
  5. Step 5: Solve for x
    x = 10,293,622,529.58/88,561.97
  6. Step 6: Final answer
    x = 116,230.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.