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Finding the Third Proportional to 4,190 and 4,558

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Solution

The third proportional to 4,190 and 4,558 is: 4,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190 : 4,558 = 4,558 : x
  2. Step 2: Convert to fraction form
    4,190/4,558 = 4,558/x
  3. Step 3: Cross multiply
    4,190x = 4,558 × 4,558
  4. Step 4: Simplify right side
    4,190x = 20,775,364
  5. Step 5: Solve for x
    x = 20,775,364/4,190
  6. Step 6: Final answer
    x = 4,958.32

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.