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Finding the Fourth Proportional to 262,391.40, 393,003.90 and 227,399.40

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Solution

The fourth proportional to 262,391.40, 393,003.90 and 227,399.40 is: 340,593.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,391.40 : 393,003.90 = 227,399.40 : x
  2. Step 2: Convert to fraction form
    262,391.40/393,003.90 = 227,399.40/x
  3. Step 3: Cross multiply
    262,391.40x = 393,003.90 × 227,399.40
  4. Step 4: Simplify right side
    262,391.40x = 89,368,851,057.66
  5. Step 5: Solve for x
    x = 89,368,851,057.66/262,391.40
  6. Step 6: Final answer
    x = 340,593.67

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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.