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Finding the Fourth Proportional to 57,708.80, 86,563.20 and 32,739.20

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Solution

The fourth proportional to 57,708.80, 86,563.20 and 32,739.20 is: 49,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,708.80 : 86,563.20 = 32,739.20 : x
  2. Step 2: Convert to fraction form
    57,708.80/86,563.20 = 32,739.20/x
  3. Step 3: Cross multiply
    57,708.80x = 86,563.20 × 32,739.20
  4. Step 4: Simplify right side
    57,708.80x = 2,834,009,917.44
  5. Step 5: Solve for x
    x = 2,834,009,917.44/57,708.80
  6. Step 6: Final answer
    x = 49,108.80

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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.