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Finding the Fourth Proportional to 200,388.88, 300,588.78 and 60,147.52

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Solution

The fourth proportional to 200,388.88, 300,588.78 and 60,147.52 is: 90,222.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,388.88 : 300,588.78 = 60,147.52 : x
  2. Step 2: Convert to fraction form
    200,388.88/300,588.78 = 60,147.52/x
  3. Step 3: Cross multiply
    200,388.88x = 300,588.78 × 60,147.52
  4. Step 4: Simplify right side
    200,388.88x = 18,079,669,656.83
  5. Step 5: Solve for x
    x = 18,079,669,656.83/200,388.88
  6. Step 6: Final answer
    x = 90,222.92

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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.