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Finding the Fourth Proportional to 2,338.17, 3,506.79 and 694.34

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Solution

The fourth proportional to 2,338.17, 3,506.79 and 694.34 is: 1,041.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,338.17 : 3,506.79 = 694.34 : x
  2. Step 2: Convert to fraction form
    2,338.17/3,506.79 = 694.34/x
  3. Step 3: Cross multiply
    2,338.17x = 3,506.79 × 694.34
  4. Step 4: Simplify right side
    2,338.17x = 2,434,902.79
  5. Step 5: Solve for x
    x = 2,434,902.79/2,338.17
  6. Step 6: Final answer
    x = 1,041.37

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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.