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Finding the Fourth Proportional to 0.95, 1.32 and 0.61

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Solution

The fourth proportional to 0.95, 1.32 and 0.61 is: 0.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.95 : 1.32 = 0.61 : x
  2. Step 2: Convert to fraction form
    0.95/1.32 = 0.61/x
  3. Step 3: Cross multiply
    0.95x = 1.32 × 0.61
  4. Step 4: Simplify right side
    0.95x = 0.81
  5. Step 5: Solve for x
    x = 0.81/0.95
  6. Step 6: Final answer
    x = 0.85

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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.