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Finding the Fourth Proportional to 192.19, 265.18 and 113.50

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Solution

The fourth proportional to 192.19, 265.18 and 113.50 is: 156.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.19 : 265.18 = 113.50 : x
  2. Step 2: Convert to fraction form
    192.19/265.18 = 113.50/x
  3. Step 3: Cross multiply
    192.19x = 265.18 × 113.50
  4. Step 4: Simplify right side
    192.19x = 30,097.93
  5. Step 5: Solve for x
    x = 30,097.93/192.19
  6. Step 6: Final answer
    x = 156.61

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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.