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Finding the Fourth Proportional to 73,128.01, 109,692.03 and 26,380.87

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Solution

The fourth proportional to 73,128.01, 109,692.03 and 26,380.87 is: 39,571.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,128.01 : 109,692.03 = 26,380.87 : x
  2. Step 2: Convert to fraction form
    73,128.01/109,692.03 = 26,380.87/x
  3. Step 3: Cross multiply
    73,128.01x = 109,692.03 × 26,380.87
  4. Step 4: Simplify right side
    73,128.01x = 2,893,771,183.47
  5. Step 5: Solve for x
    x = 2,893,771,183.47/73,128.01
  6. Step 6: Final answer
    x = 39,571.31

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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.