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Finding the Fourth Proportional to 216,738.40, 325,064.40 and 104,418.40

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Solution

The fourth proportional to 216,738.40, 325,064.40 and 104,418.40 is: 156,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,738.40 : 325,064.40 = 104,418.40 : x
  2. Step 2: Convert to fraction form
    216,738.40/325,064.40 = 104,418.40/x
  3. Step 3: Cross multiply
    216,738.40x = 325,064.40 × 104,418.40
  4. Step 4: Simplify right side
    216,738.40x = 33,942,704,544.96
  5. Step 5: Solve for x
    x = 33,942,704,544.96/216,738.40
  6. Step 6: Final answer
    x = 156,606.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.