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Finding the Fourth Proportional to 358,163.78, 537,129.83 and 118,223.78

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Solution

The fourth proportional to 358,163.78, 537,129.83 and 118,223.78 is: 177,297.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,163.78 : 537,129.83 = 118,223.78 : x
  2. Step 2: Convert to fraction form
    358,163.78/537,129.83 = 118,223.78/x
  3. Step 3: Cross multiply
    358,163.78x = 537,129.83 × 118,223.78
  4. Step 4: Simplify right side
    358,163.78x = 63,501,515,576.59
  5. Step 5: Solve for x
    x = 63,501,515,576.59/358,163.78
  6. Step 6: Final answer
    x = 177,297.43

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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.