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Finding the Third Proportional to 4,938.75 and 10,242

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Solution

The third proportional to 4,938.75 and 10,242 is: 21,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938.75 : 10,242 = 10,242 : x
  2. Step 2: Convert to fraction form
    4,938.75/10,242 = 10,242/x
  3. Step 3: Cross multiply
    4,938.75x = 10,242 × 10,242
  4. Step 4: Simplify right side
    4,938.75x = 104,898,564
  5. Step 5: Solve for x
    x = 104,898,564/4,938.75
  6. Step 6: Final answer
    x = 21,239.90

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.