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Finding the Fourth Proportional to 54,043.80, 81,188.72 and 39,097.03

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Solution

The fourth proportional to 54,043.80, 81,188.72 and 39,097.03 is: 58,734.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,043.80 : 81,188.72 = 39,097.03 : x
  2. Step 2: Convert to fraction form
    54,043.80/81,188.72 = 39,097.03/x
  3. Step 3: Cross multiply
    54,043.80x = 81,188.72 × 39,097.03
  4. Step 4: Simplify right side
    54,043.80x = 3,174,237,415.56
  5. Step 5: Solve for x
    x = 3,174,237,415.56/54,043.80
  6. Step 6: Final answer
    x = 58,734.53

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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.