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Finding the Third Proportional to 4,831.88 and 9,420.75

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Solution

The third proportional to 4,831.88 and 9,420.75 is: 18,367.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,831.88 : 9,420.75 = 9,420.75 : x
  2. Step 2: Convert to fraction form
    4,831.88/9,420.75 = 9,420.75/x
  3. Step 3: Cross multiply
    4,831.88x = 9,420.75 × 9,420.75
  4. Step 4: Simplify right side
    4,831.88x = 88,750,530.56
  5. Step 5: Solve for x
    x = 88,750,530.56/4,831.88
  6. Step 6: Final answer
    x = 18,367.72

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.