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Finding the Fourth Proportional to 200,399.88, 300,605.28 and 60,158.52

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Solution

The fourth proportional to 200,399.88, 300,605.28 and 60,158.52 is: 90,239.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,399.88 : 300,605.28 = 60,158.52 : x
  2. Step 2: Convert to fraction form
    200,399.88/300,605.28 = 60,158.52/x
  3. Step 3: Cross multiply
    200,399.88x = 300,605.28 × 60,158.52
  4. Step 4: Simplify right side
    200,399.88x = 18,083,968,748.99
  5. Step 5: Solve for x
    x = 18,083,968,748.99/200,399.88
  6. Step 6: Final answer
    x = 90,239.42

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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.