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Finding the Fourth Proportional to 526,354.22, 789,523.99 and 126,991.64

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Solution

The fourth proportional to 526,354.22, 789,523.99 and 126,991.64 is: 190,485.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,354.22 : 789,523.99 = 126,991.64 : x
  2. Step 2: Convert to fraction form
    526,354.22/789,523.99 = 126,991.64/x
  3. Step 3: Cross multiply
    526,354.22x = 789,523.99 × 126,991.64
  4. Step 4: Simplify right side
    526,354.22x = 100,262,942,044.35
  5. Step 5: Solve for x
    x = 100,262,942,044.35/526,354.22
  6. Step 6: Final answer
    x = 190,485.68

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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.