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Finding the Fourth Proportional to 1.94, 2.64 and 1.92

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Solution

The fourth proportional to 1.94, 2.64 and 1.92 is: 2.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.94 : 2.64 = 1.92 : x
  2. Step 2: Convert to fraction form
    1.94/2.64 = 1.92/x
  3. Step 3: Cross multiply
    1.94x = 2.64 × 1.92
  4. Step 4: Simplify right side
    1.94x = 5.07
  5. Step 5: Solve for x
    x = 5.07/1.94
  6. Step 6: Final answer
    x = 2.62

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.