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Finding the Fourth Proportional to 147,889.52, 204,087.60 and 80,821.52

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Solution

The fourth proportional to 147,889.52, 204,087.60 and 80,821.52 is: 111,533.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,889.52 : 204,087.60 = 80,821.52 : x
  2. Step 2: Convert to fraction form
    147,889.52/204,087.60 = 80,821.52/x
  3. Step 3: Cross multiply
    147,889.52x = 204,087.60 × 80,821.52
  4. Step 4: Simplify right side
    147,889.52x = 16,494,670,045.15
  5. Step 5: Solve for x
    x = 16,494,670,045.15/147,889.52
  6. Step 6: Final answer
    x = 111,533.73

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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.