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Finding the Fourth Proportional to 381,121.81, 525,940.22 and 235,889.06

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Solution

The fourth proportional to 381,121.81, 525,940.22 and 235,889.06 is: 325,522.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,121.81 : 525,940.22 = 235,889.06 : x
  2. Step 2: Convert to fraction form
    381,121.81/525,940.22 = 235,889.06/x
  3. Step 3: Cross multiply
    381,121.81x = 525,940.22 × 235,889.06
  4. Step 4: Simplify right side
    381,121.81x = 124,063,542,072.02
  5. Step 5: Solve for x
    x = 124,063,542,072.02/381,121.81
  6. Step 6: Final answer
    x = 325,522.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.