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Finding the Third Proportional to 28,215 and 66,845.25

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Solution

The third proportional to 28,215 and 66,845.25 is: 158,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215 : 66,845.25 = 66,845.25 : x
  2. Step 2: Convert to fraction form
    28,215/66,845.25 = 66,845.25/x
  3. Step 3: Cross multiply
    28,215x = 66,845.25 × 66,845.25
  4. Step 4: Simplify right side
    28,215x = 4,468,287,447.56
  5. Step 5: Solve for x
    x = 4,468,287,447.56/28,215
  6. Step 6: Final answer
    x = 158,365.67

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.