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Finding the Fourth Proportional to 399,561.60, 599,273.28 and 150,245.76

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Solution

The fourth proportional to 399,561.60, 599,273.28 and 150,245.76 is: 225,342.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,561.60 : 599,273.28 = 150,245.76 : x
  2. Step 2: Convert to fraction form
    399,561.60/599,273.28 = 150,245.76/x
  3. Step 3: Cross multiply
    399,561.60x = 599,273.28 × 150,245.76
  4. Step 4: Simplify right side
    399,561.60x = 90,038,269,401.29
  5. Step 5: Solve for x
    x = 90,038,269,401.29/399,561.60
  6. Step 6: Final answer
    x = 225,342.65

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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.