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Finding the Fourth Proportional to 996.34, 1,494.50 and 474.76

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Solution

The fourth proportional to 996.34, 1,494.50 and 474.76 is: 712.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.34 : 1,494.50 = 474.76 : x
  2. Step 2: Convert to fraction form
    996.34/1,494.50 = 474.76/x
  3. Step 3: Cross multiply
    996.34x = 1,494.50 × 474.76
  4. Step 4: Simplify right side
    996.34x = 709,521.35
  5. Step 5: Solve for x
    x = 709,521.35/996.34
  6. Step 6: Final answer
    x = 712.13

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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.