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Finding the Third Proportional to 958 and 2,100

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Solution

The third proportional to 958 and 2,100 is: 4,603.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    958 : 2,100 = 2,100 : x
  2. Step 2: Convert to fraction form
    958/2,100 = 2,100/x
  3. Step 3: Cross multiply
    958x = 2,100 × 2,100
  4. Step 4: Simplify right side
    958x = 4,410,000
  5. Step 5: Solve for x
    x = 4,410,000/958
  6. Step 6: Final answer
    x = 4,603.34

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.