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Finding the Fourth Proportional to 372.18, 558.27 and 141.06

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Solution

The fourth proportional to 372.18, 558.27 and 141.06 is: 211.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.18 : 558.27 = 141.06 : x
  2. Step 2: Convert to fraction form
    372.18/558.27 = 141.06/x
  3. Step 3: Cross multiply
    372.18x = 558.27 × 141.06
  4. Step 4: Simplify right side
    372.18x = 78,749.57
  5. Step 5: Solve for x
    x = 78,749.57/372.18
  6. Step 6: Final answer
    x = 211.59

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.