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Finding the Fourth Proportional to 93,048.46, 138,942.43 and 73,857.79

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Solution

The fourth proportional to 93,048.46, 138,942.43 and 73,857.79 is: 110,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,048.46 : 138,942.43 = 73,857.79 : x
  2. Step 2: Convert to fraction form
    93,048.46/138,942.43 = 73,857.79/x
  3. Step 3: Cross multiply
    93,048.46x = 138,942.43 × 73,857.79
  4. Step 4: Simplify right side
    93,048.46x = 10,261,981,001.45
  5. Step 5: Solve for x
    x = 10,261,981,001.45/93,048.46
  6. Step 6: Final answer
    x = 110,286.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.