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Finding the Third Proportional to 4,831.50 and 10,221

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Solution

The third proportional to 4,831.50 and 10,221 is: 21,622.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,831.50 : 10,221 = 10,221 : x
  2. Step 2: Convert to fraction form
    4,831.50/10,221 = 10,221/x
  3. Step 3: Cross multiply
    4,831.50x = 10,221 × 10,221
  4. Step 4: Simplify right side
    4,831.50x = 104,468,841
  5. Step 5: Solve for x
    x = 104,468,841/4,831.50
  6. Step 6: Final answer
    x = 21,622.44

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.