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Finding the Fourth Proportional to 70.16, 96.82 and 46.88

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Solution

The fourth proportional to 70.16, 96.82 and 46.88 is: 64.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.16 : 96.82 = 46.88 : x
  2. Step 2: Convert to fraction form
    70.16/96.82 = 46.88/x
  3. Step 3: Cross multiply
    70.16x = 96.82 × 46.88
  4. Step 4: Simplify right side
    70.16x = 4,538.92
  5. Step 5: Solve for x
    x = 4,538.92/70.16
  6. Step 6: Final answer
    x = 64.69

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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.