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Finding the Fourth Proportional to 109.98, 151.82 and 68.53

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Solution

The fourth proportional to 109.98, 151.82 and 68.53 is: 94.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.98 : 151.82 = 68.53 : x
  2. Step 2: Convert to fraction form
    109.98/151.82 = 68.53/x
  3. Step 3: Cross multiply
    109.98x = 151.82 × 68.53
  4. Step 4: Simplify right side
    109.98x = 10,404.22
  5. Step 5: Solve for x
    x = 10,404.22/109.98
  6. Step 6: Final answer
    x = 94.60

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