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Finding the Fourth Proportional to 320,671.73, 481,023.11 and 84,014.64

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Solution

The fourth proportional to 320,671.73, 481,023.11 and 84,014.64 is: 126,026.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,671.73 : 481,023.11 = 84,014.64 : x
  2. Step 2: Convert to fraction form
    320,671.73/481,023.11 = 84,014.64/x
  3. Step 3: Cross multiply
    320,671.73x = 481,023.11 × 84,014.64
  4. Step 4: Simplify right side
    320,671.73x = 40,412,983,418.33
  5. Step 5: Solve for x
    x = 40,412,983,418.33/320,671.73
  6. Step 6: Final answer
    x = 126,026.02

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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.