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Finding the Fourth Proportional to 54,975.60, 82,458.60 and 18,039.60

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Solution

The fourth proportional to 54,975.60, 82,458.60 and 18,039.60 is: 27,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,975.60 : 82,458.60 = 18,039.60 : x
  2. Step 2: Convert to fraction form
    54,975.60/82,458.60 = 18,039.60/x
  3. Step 3: Cross multiply
    54,975.60x = 82,458.60 × 18,039.60
  4. Step 4: Simplify right side
    54,975.60x = 1,487,520,160.56
  5. Step 5: Solve for x
    x = 1,487,520,160.56/54,975.60
  6. Step 6: Final answer
    x = 27,057.82

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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.