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Finding the Fourth Proportional to 104,279.86, 156,418.14 and 25,393.42

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Solution

The fourth proportional to 104,279.86, 156,418.14 and 25,393.42 is: 38,089.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,279.86 : 156,418.14 = 25,393.42 : x
  2. Step 2: Convert to fraction form
    104,279.86/156,418.14 = 25,393.42/x
  3. Step 3: Cross multiply
    104,279.86x = 156,418.14 × 25,393.42
  4. Step 4: Simplify right side
    104,279.86x = 3,971,991,524.64
  5. Step 5: Solve for x
    x = 3,971,991,524.64/104,279.86
  6. Step 6: Final answer
    x = 38,089.73

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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.