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Finding the Fourth Proportional to 2,606.22, 3,909.21 and 962.66

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Solution

The fourth proportional to 2,606.22, 3,909.21 and 962.66 is: 1,443.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,606.22 : 3,909.21 = 962.66 : x
  2. Step 2: Convert to fraction form
    2,606.22/3,909.21 = 962.66/x
  3. Step 3: Cross multiply
    2,606.22x = 3,909.21 × 962.66
  4. Step 4: Simplify right side
    2,606.22x = 3,763,240.10
  5. Step 5: Solve for x
    x = 3,763,240.10/2,606.22
  6. Step 6: Final answer
    x = 1,443.95

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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.