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Finding the Fourth Proportional to 562.23, 773.90 and 492.12

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Solution

The fourth proportional to 562.23, 773.90 and 492.12 is: 677.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.23 : 773.90 = 492.12 : x
  2. Step 2: Convert to fraction form
    562.23/773.90 = 492.12/x
  3. Step 3: Cross multiply
    562.23x = 773.90 × 492.12
  4. Step 4: Simplify right side
    562.23x = 380,849.21
  5. Step 5: Solve for x
    x = 380,849.21/562.23
  6. Step 6: Final answer
    x = 677.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.