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Finding the Fourth Proportional to 144,940.78, 217,409.01 and 50,239.90

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Solution

The fourth proportional to 144,940.78, 217,409.01 and 50,239.90 is: 75,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,940.78 : 217,409.01 = 50,239.90 : x
  2. Step 2: Convert to fraction form
    144,940.78/217,409.01 = 50,239.90/x
  3. Step 3: Cross multiply
    144,940.78x = 217,409.01 × 50,239.90
  4. Step 4: Simplify right side
    144,940.78x = 10,922,606,921.50
  5. Step 5: Solve for x
    x = 10,922,606,921.50/144,940.78
  6. Step 6: Final answer
    x = 75,359.10

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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.