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Finding the Fourth Proportional to 193.93, 289.16 and 191.53

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Solution

The fourth proportional to 193.93, 289.16 and 191.53 is: 285.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.93 : 289.16 = 191.53 : x
  2. Step 2: Convert to fraction form
    193.93/289.16 = 191.53/x
  3. Step 3: Cross multiply
    193.93x = 289.16 × 191.53
  4. Step 4: Simplify right side
    193.93x = 55,381.13
  5. Step 5: Solve for x
    x = 55,381.13/193.93
  6. Step 6: Final answer
    x = 285.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.