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Finding the Third Proportional to 21,831.75 and 32,913

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Solution

The third proportional to 21,831.75 and 32,913 is: 49,618.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.75 : 32,913 = 32,913 : x
  2. Step 2: Convert to fraction form
    21,831.75/32,913 = 32,913/x
  3. Step 3: Cross multiply
    21,831.75x = 32,913 × 32,913
  4. Step 4: Simplify right side
    21,831.75x = 1,083,265,569
  5. Step 5: Solve for x
    x = 1,083,265,569/21,831.75
  6. Step 6: Final answer
    x = 49,618.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.