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Finding the Fourth Proportional to 38,493.20, 57,739.80 and 38,493.20

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Solution

The fourth proportional to 38,493.20, 57,739.80 and 38,493.20 is: 57,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,493.20 : 57,739.80 = 38,493.20 : x
  2. Step 2: Convert to fraction form
    38,493.20/57,739.80 = 38,493.20/x
  3. Step 3: Cross multiply
    38,493.20x = 57,739.80 × 38,493.20
  4. Step 4: Simplify right side
    38,493.20x = 2,222,589,669.36
  5. Step 5: Solve for x
    x = 2,222,589,669.36/38,493.20
  6. Step 6: Final answer
    x = 57,739.80

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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.