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Finding the Third Proportional to 11,724.75 and 12,831.75

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Solution

The third proportional to 11,724.75 and 12,831.75 is: 14,043.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.75 : 12,831.75 = 12,831.75 : x
  2. Step 2: Convert to fraction form
    11,724.75/12,831.75 = 12,831.75/x
  3. Step 3: Cross multiply
    11,724.75x = 12,831.75 × 12,831.75
  4. Step 4: Simplify right side
    11,724.75x = 164,653,808.06
  5. Step 5: Solve for x
    x = 164,653,808.06/11,724.75
  6. Step 6: Final answer
    x = 14,043.27

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.