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Finding the Fourth Proportional to 321,236.01, 481,878.59 and 84,575.25

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Solution

The fourth proportional to 321,236.01, 481,878.59 and 84,575.25 is: 126,869.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,236.01 : 481,878.59 = 84,575.25 : x
  2. Step 2: Convert to fraction form
    321,236.01/481,878.59 = 84,575.25/x
  3. Step 3: Cross multiply
    321,236.01x = 481,878.59 × 84,575.25
  4. Step 4: Simplify right side
    321,236.01x = 40,755,001,796.02
  5. Step 5: Solve for x
    x = 40,755,001,796.02/321,236.01
  6. Step 6: Final answer
    x = 126,869.34

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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.