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Finding the Fourth Proportional to 114,247.76, 171,073.56 and 91,939.28

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Solution

The fourth proportional to 114,247.76, 171,073.56 and 91,939.28 is: 137,669.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,247.76 : 171,073.56 = 91,939.28 : x
  2. Step 2: Convert to fraction form
    114,247.76/171,073.56 = 91,939.28/x
  3. Step 3: Cross multiply
    114,247.76x = 171,073.56 × 91,939.28
  4. Step 4: Simplify right side
    114,247.76x = 15,728,379,933.44
  5. Step 5: Solve for x
    x = 15,728,379,933.44/114,247.76
  6. Step 6: Final answer
    x = 137,669.04

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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.