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Finding the Fourth Proportional to 191.16, 263.77 and 116.46

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Solution

The fourth proportional to 191.16, 263.77 and 116.46 is: 160.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.16 : 263.77 = 116.46 : x
  2. Step 2: Convert to fraction form
    191.16/263.77 = 116.46/x
  3. Step 3: Cross multiply
    191.16x = 263.77 × 116.46
  4. Step 4: Simplify right side
    191.16x = 30,718.36
  5. Step 5: Solve for x
    x = 30,718.36/191.16
  6. Step 6: Final answer
    x = 160.69

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Why These Related Problems?

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