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Finding the Fourth Proportional to 387,168.96, 580,789.34 and 150,529.60

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Solution

The fourth proportional to 387,168.96, 580,789.34 and 150,529.60 is: 225,808.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,168.96 : 580,789.34 = 150,529.60 : x
  2. Step 2: Convert to fraction form
    387,168.96/580,789.34 = 150,529.60/x
  3. Step 3: Cross multiply
    387,168.96x = 580,789.34 × 150,529.60
  4. Step 4: Simplify right side
    387,168.96x = 87,425,987,034.46
  5. Step 5: Solve for x
    x = 87,425,987,034.46/387,168.96
  6. Step 6: Final answer
    x = 225,808.36

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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.