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Finding the Fourth Proportional to 353.66, 529.87 and 191.45

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Solution

The fourth proportional to 353.66, 529.87 and 191.45 is: 286.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.66 : 529.87 = 191.45 : x
  2. Step 2: Convert to fraction form
    353.66/529.87 = 191.45/x
  3. Step 3: Cross multiply
    353.66x = 529.87 × 191.45
  4. Step 4: Simplify right side
    353.66x = 101,443.61
  5. Step 5: Solve for x
    x = 101,443.61/353.66
  6. Step 6: Final answer
    x = 286.84

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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.