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Finding the Fourth Proportional to 231,838.66, 347,758.26 and 74,079.28

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Solution

The fourth proportional to 231,838.66, 347,758.26 and 74,079.28 is: 111,119.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,838.66 : 347,758.26 = 74,079.28 : x
  2. Step 2: Convert to fraction form
    231,838.66/347,758.26 = 74,079.28/x
  3. Step 3: Cross multiply
    231,838.66x = 347,758.26 × 74,079.28
  4. Step 4: Simplify right side
    231,838.66x = 25,761,681,514.85
  5. Step 5: Solve for x
    x = 25,761,681,514.85/231,838.66
  6. Step 6: Final answer
    x = 111,119.01

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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.