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Finding the Fourth Proportional to 128,736.66, 193,113.50 and 44,504.97

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Solution

The fourth proportional to 128,736.66, 193,113.50 and 44,504.97 is: 66,760.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736.66 : 193,113.50 = 44,504.97 : x
  2. Step 2: Convert to fraction form
    128,736.66/193,113.50 = 44,504.97/x
  3. Step 3: Cross multiply
    128,736.66x = 193,113.50 × 44,504.97
  4. Step 4: Simplify right side
    128,736.66x = 8,594,509,336.00
  5. Step 5: Solve for x
    x = 8,594,509,336.00/128,736.66
  6. Step 6: Final answer
    x = 66,760.39

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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.