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Finding the Fourth Proportional to 171,738.09, 236,950.11 and 111,311.28

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Solution

The fourth proportional to 171,738.09, 236,950.11 and 111,311.28 is: 153,578.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,738.09 : 236,950.11 = 111,311.28 : x
  2. Step 2: Convert to fraction form
    171,738.09/236,950.11 = 111,311.28/x
  3. Step 3: Cross multiply
    171,738.09x = 236,950.11 × 111,311.28
  4. Step 4: Simplify right side
    171,738.09x = 26,375,220,040.24
  5. Step 5: Solve for x
    x = 26,375,220,040.24/171,738.09
  6. Step 6: Final answer
    x = 153,578.16

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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.