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Finding the Fourth Proportional to 792.24, 1,188.20 and 462.96

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Solution

The fourth proportional to 792.24, 1,188.20 and 462.96 is: 694.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.24 : 1,188.20 = 462.96 : x
  2. Step 2: Convert to fraction form
    792.24/1,188.20 = 462.96/x
  3. Step 3: Cross multiply
    792.24x = 1,188.20 × 462.96
  4. Step 4: Simplify right side
    792.24x = 550,086.76
  5. Step 5: Solve for x
    x = 550,086.76/792.24
  6. Step 6: Final answer
    x = 694.34

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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.