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Finding the Fourth Proportional to 128,442.97, 192,616.66 and 44,179.48

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Solution

The fourth proportional to 128,442.97, 192,616.66 and 44,179.48 is: 66,252.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,442.97 : 192,616.66 = 44,179.48 : x
  2. Step 2: Convert to fraction form
    128,442.97/192,616.66 = 44,179.48/x
  3. Step 3: Cross multiply
    128,442.97x = 192,616.66 × 44,179.48
  4. Step 4: Simplify right side
    128,442.97x = 8,509,702,694.16
  5. Step 5: Solve for x
    x = 8,509,702,694.16/128,442.97
  6. Step 6: Final answer
    x = 66,252.77

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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.