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Finding the Fourth Proportional to 239,684, 329,986.56 and 188,606.72

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Solution

The fourth proportional to 239,684, 329,986.56 and 188,606.72 is: 259,665.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,684 : 329,986.56 = 188,606.72 : x
  2. Step 2: Convert to fraction form
    239,684/329,986.56 = 188,606.72/x
  3. Step 3: Cross multiply
    239,684x = 329,986.56 × 188,606.72
  4. Step 4: Simplify right side
    239,684x = 62,237,682,725.68
  5. Step 5: Solve for x
    x = 62,237,682,725.68/239,684
  6. Step 6: Final answer
    x = 259,665.57

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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.