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Finding the Fourth Proportional to 5,369.31, 7,408.93 and 2,979.25

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Solution

The fourth proportional to 5,369.31, 7,408.93 and 2,979.25 is: 4,110.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,369.31 : 7,408.93 = 2,979.25 : x
  2. Step 2: Convert to fraction form
    5,369.31/7,408.93 = 2,979.25/x
  3. Step 3: Cross multiply
    5,369.31x = 7,408.93 × 2,979.25
  4. Step 4: Simplify right side
    5,369.31x = 22,073,054.70
  5. Step 5: Solve for x
    x = 22,073,054.70/5,369.31
  6. Step 6: Final answer
    x = 4,110.97

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1.5x scale

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.