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Finding the Fourth Proportional to 935.36, 1,402.70 and 674.58

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Solution

The fourth proportional to 935.36, 1,402.70 and 674.58 is: 1,011.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.36 : 1,402.70 = 674.58 : x
  2. Step 2: Convert to fraction form
    935.36/1,402.70 = 674.58/x
  3. Step 3: Cross multiply
    935.36x = 1,402.70 × 674.58
  4. Step 4: Simplify right side
    935.36x = 946,233.37
  5. Step 5: Solve for x
    x = 946,233.37/935.36
  6. Step 6: Final answer
    x = 1,011.62

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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.