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Finding the Fourth Proportional to 57,687.66, 86,534.64 and 18,241.83

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Solution

The fourth proportional to 57,687.66, 86,534.64 and 18,241.83 is: 27,363.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,687.66 : 86,534.64 = 18,241.83 : x
  2. Step 2: Convert to fraction form
    57,687.66/86,534.64 = 18,241.83/x
  3. Step 3: Cross multiply
    57,687.66x = 86,534.64 × 18,241.83
  4. Step 4: Simplify right side
    57,687.66x = 1,578,550,191.99
  5. Step 5: Solve for x
    x = 1,578,550,191.99/57,687.66
  6. Step 6: Final answer
    x = 27,363.74

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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.