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Finding the Third Proportional to 28,440.75 and 61,242

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Solution

The third proportional to 28,440.75 and 61,242 is: 131,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.75 : 61,242 = 61,242 : x
  2. Step 2: Convert to fraction form
    28,440.75/61,242 = 61,242/x
  3. Step 3: Cross multiply
    28,440.75x = 61,242 × 61,242
  4. Step 4: Simplify right side
    28,440.75x = 3,750,582,564
  5. Step 5: Solve for x
    x = 3,750,582,564/28,440.75
  6. Step 6: Final answer
    x = 131,873.55

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.