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Finding the Fourth Proportional to 111,786.75, 154,267.71 and 60,800.61

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Solution

The fourth proportional to 111,786.75, 154,267.71 and 60,800.61 is: 83,905.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,786.75 : 154,267.71 = 60,800.61 : x
  2. Step 2: Convert to fraction form
    111,786.75/154,267.71 = 60,800.61/x
  3. Step 3: Cross multiply
    111,786.75x = 154,267.71 × 60,800.61
  4. Step 4: Simplify right side
    111,786.75x = 9,379,570,871.30
  5. Step 5: Solve for x
    x = 9,379,570,871.30/111,786.75
  6. Step 6: Final answer
    x = 83,905.93

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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.