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Finding the Fourth Proportional to 57,796.43, 86,697.65 and 18,356.63

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Solution

The fourth proportional to 57,796.43, 86,697.65 and 18,356.63 is: 27,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,796.43 : 86,697.65 = 18,356.63 : x
  2. Step 2: Convert to fraction form
    57,796.43/86,697.65 = 18,356.63/x
  3. Step 3: Cross multiply
    57,796.43x = 86,697.65 × 18,356.63
  4. Step 4: Simplify right side
    57,796.43x = 1,591,476,682.92
  5. Step 5: Solve for x
    x = 1,591,476,682.92/57,796.43
  6. Step 6: Final answer
    x = 27,535.90

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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.