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Finding the Fourth Proportional to 111,076.41, 153,286.19 and 68,055.98

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Solution

The fourth proportional to 111,076.41, 153,286.19 and 68,055.98 is: 93,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,076.41 : 153,286.19 = 68,055.98 : x
  2. Step 2: Convert to fraction form
    111,076.41/153,286.19 = 68,055.98/x
  3. Step 3: Cross multiply
    111,076.41x = 153,286.19 × 68,055.98
  4. Step 4: Simplify right side
    111,076.41x = 10,432,040,774.21
  5. Step 5: Solve for x
    x = 10,432,040,774.21/111,076.41
  6. Step 6: Final answer
    x = 93,917.70

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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.