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Finding the Fourth Proportional to 2,938.39, 4,408.00 and 964.17

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Solution

The fourth proportional to 2,938.39, 4,408.00 and 964.17 is: 1,446.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.39 : 4,408.00 = 964.17 : x
  2. Step 2: Convert to fraction form
    2,938.39/4,408.00 = 964.17/x
  3. Step 3: Cross multiply
    2,938.39x = 4,408.00 × 964.17
  4. Step 4: Simplify right side
    2,938.39x = 4,250,054.64
  5. Step 5: Solve for x
    x = 4,250,054.64/2,938.39
  6. Step 6: Final answer
    x = 1,446.39

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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.