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Finding the Fourth Proportional to 188.84, 283.29 and 116.78

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Solution

The fourth proportional to 188.84, 283.29 and 116.78 is: 175.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.84 : 283.29 = 116.78 : x
  2. Step 2: Convert to fraction form
    188.84/283.29 = 116.78/x
  3. Step 3: Cross multiply
    188.84x = 283.29 × 116.78
  4. Step 4: Simplify right side
    188.84x = 33,082.61
  5. Step 5: Solve for x
    x = 33,082.61/188.84
  6. Step 6: Final answer
    x = 175.19

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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.