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Finding the Fourth Proportional to 262,616.80, 393,892.35 and 73,091.38

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Solution

The fourth proportional to 262,616.80, 393,892.35 and 73,091.38 is: 109,627.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,616.80 : 393,892.35 = 73,091.38 : x
  2. Step 2: Convert to fraction form
    262,616.80/393,892.35 = 73,091.38/x
  3. Step 3: Cross multiply
    262,616.80x = 393,892.35 × 73,091.38
  4. Step 4: Simplify right side
    262,616.80x = 28,790,135,432.94
  5. Step 5: Solve for x
    x = 28,790,135,432.94/262,616.80
  6. Step 6: Final answer
    x = 109,627.93

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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.