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Finding the Third Proportional to 10,365.75 and 16,215

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Solution

The third proportional to 10,365.75 and 16,215 is: 25,364.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,365.75 : 16,215 = 16,215 : x
  2. Step 2: Convert to fraction form
    10,365.75/16,215 = 16,215/x
  3. Step 3: Cross multiply
    10,365.75x = 16,215 × 16,215
  4. Step 4: Simplify right side
    10,365.75x = 262,926,225
  5. Step 5: Solve for x
    x = 262,926,225/10,365.75
  6. Step 6: Final answer
    x = 25,364.90

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.