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Finding the Fourth Proportional to 35,940.30, 53,913.24 and 12,240.54

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Solution

The fourth proportional to 35,940.30, 53,913.24 and 12,240.54 is: 18,361.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,940.30 : 53,913.24 = 12,240.54 : x
  2. Step 2: Convert to fraction form
    35,940.30/53,913.24 = 12,240.54/x
  3. Step 3: Cross multiply
    35,940.30x = 53,913.24 × 12,240.54
  4. Step 4: Simplify right side
    35,940.30x = 659,927,170.75
  5. Step 5: Solve for x
    x = 659,927,170.75/35,940.30
  6. Step 6: Final answer
    x = 18,361.76

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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.