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Finding the Fourth Proportional to 618.36, 927.69 and 436.11

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Solution

The fourth proportional to 618.36, 927.69 and 436.11 is: 654.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.36 : 927.69 = 436.11 : x
  2. Step 2: Convert to fraction form
    618.36/927.69 = 436.11/x
  3. Step 3: Cross multiply
    618.36x = 927.69 × 436.11
  4. Step 4: Simplify right side
    618.36x = 404,574.89
  5. Step 5: Solve for x
    x = 404,574.89/618.36
  6. Step 6: Final answer
    x = 654.27

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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.