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Finding the Fourth Proportional to 4.35, 6.53 and 1.94

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Solution

The fourth proportional to 4.35, 6.53 and 1.94 is: 2.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.35 : 6.53 = 1.94 : x
  2. Step 2: Convert to fraction form
    4.35/6.53 = 1.94/x
  3. Step 3: Cross multiply
    4.35x = 6.53 × 1.94
  4. Step 4: Simplify right side
    4.35x = 12.69
  5. Step 5: Solve for x
    x = 12.69/4.35
  6. Step 6: Final answer
    x = 2.92

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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.