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Finding the Fourth Proportional to 517.34, 776.11 and 192.70

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Solution

The fourth proportional to 517.34, 776.11 and 192.70 is: 289.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.34 : 776.11 = 192.70 : x
  2. Step 2: Convert to fraction form
    517.34/776.11 = 192.70/x
  3. Step 3: Cross multiply
    517.34x = 776.11 × 192.70
  4. Step 4: Simplify right side
    517.34x = 149,558.89
  5. Step 5: Solve for x
    x = 149,558.89/517.34
  6. Step 6: Final answer
    x = 289.09

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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.