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Finding the Fourth Proportional to 481,720.22, 664,689.42 and 274,894.18

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Solution

The fourth proportional to 481,720.22, 664,689.42 and 274,894.18 is: 379,305.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,720.22 : 664,689.42 = 274,894.18 : x
  2. Step 2: Convert to fraction form
    481,720.22/664,689.42 = 274,894.18/x
  3. Step 3: Cross multiply
    481,720.22x = 664,689.42 × 274,894.18
  4. Step 4: Simplify right side
    481,720.22x = 182,719,252,865.58
  5. Step 5: Solve for x
    x = 182,719,252,865.58/481,720.22
  6. Step 6: Final answer
    x = 379,305.76

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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.