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Finding the Fourth Proportional to 449,615.88, 674,408.23 and 112,659.39

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Solution

The fourth proportional to 449,615.88, 674,408.23 and 112,659.39 is: 168,985.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,615.88 : 674,408.23 = 112,659.39 : x
  2. Step 2: Convert to fraction form
    449,615.88/674,408.23 = 112,659.39/x
  3. Step 3: Cross multiply
    449,615.88x = 674,408.23 × 112,659.39
  4. Step 4: Simplify right side
    449,615.88x = 75,978,419,521.13
  5. Step 5: Solve for x
    x = 75,978,419,521.13/449,615.88
  6. Step 6: Final answer
    x = 168,985.18

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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.