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Finding the Fourth Proportional to 50,659.88, 75,989.81 and 13,723.88

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Solution

The fourth proportional to 50,659.88, 75,989.81 and 13,723.88 is: 20,585.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,659.88 : 75,989.81 = 13,723.88 : x
  2. Step 2: Convert to fraction form
    50,659.88/75,989.81 = 13,723.88/x
  3. Step 3: Cross multiply
    50,659.88x = 75,989.81 × 13,723.88
  4. Step 4: Simplify right side
    50,659.88x = 1,042,874,688.02
  5. Step 5: Solve for x
    x = 1,042,874,688.02/50,659.88
  6. Step 6: Final answer
    x = 20,585.81

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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.