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Finding the Third Proportional to 2,558 and 4,313

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Solution

The third proportional to 2,558 and 4,313 is: 7,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,558 : 4,313 = 4,313 : x
  2. Step 2: Convert to fraction form
    2,558/4,313 = 4,313/x
  3. Step 3: Cross multiply
    2,558x = 4,313 × 4,313
  4. Step 4: Simplify right side
    2,558x = 18,601,969
  5. Step 5: Solve for x
    x = 18,601,969/2,558
  6. Step 6: Final answer
    x = 7,272.08

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.