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Finding the Fourth Proportional to 1.59, 2.39 and 0.92

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Solution

The fourth proportional to 1.59, 2.39 and 0.92 is: 1.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.59 : 2.39 = 0.92 : x
  2. Step 2: Convert to fraction form
    1.59/2.39 = 0.92/x
  3. Step 3: Cross multiply
    1.59x = 2.39 × 0.92
  4. Step 4: Simplify right side
    1.59x = 2.20
  5. Step 5: Solve for x
    x = 2.20/1.59
  6. Step 6: Final answer
    x = 1.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.