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Finding the Fourth Proportional to 400,816.72, 601,234.80 and 134,585.92

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Solution

The fourth proportional to 400,816.72, 601,234.80 and 134,585.92 is: 201,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,816.72 : 601,234.80 = 134,585.92 : x
  2. Step 2: Convert to fraction form
    400,816.72/601,234.80 = 134,585.92/x
  3. Step 3: Cross multiply
    400,816.72x = 601,234.80 × 134,585.92
  4. Step 4: Simplify right side
    400,816.72x = 80,917,738,694.02
  5. Step 5: Solve for x
    x = 80,917,738,694.02/400,816.72
  6. Step 6: Final answer
    x = 201,882.14

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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.