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Finding the Fourth Proportional to 262,356.72, 393,826.44 and 135,963.12

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Solution

The fourth proportional to 262,356.72, 393,826.44 and 135,963.12 is: 204,095.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,356.72 : 393,826.44 = 135,963.12 : x
  2. Step 2: Convert to fraction form
    262,356.72/393,826.44 = 135,963.12/x
  3. Step 3: Cross multiply
    262,356.72x = 393,826.44 × 135,963.12
  4. Step 4: Simplify right side
    262,356.72x = 53,545,871,520.89
  5. Step 5: Solve for x
    x = 53,545,871,520.89/262,356.72
  6. Step 6: Final answer
    x = 204,095.67

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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.