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Finding the Fourth Proportional to 139,953.78, 192,983.67 and 94,553.01

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Solution

The fourth proportional to 139,953.78, 192,983.67 and 94,553.01 is: 130,380.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,953.78 : 192,983.67 = 94,553.01 : x
  2. Step 2: Convert to fraction form
    139,953.78/192,983.67 = 94,553.01/x
  3. Step 3: Cross multiply
    139,953.78x = 192,983.67 × 94,553.01
  4. Step 4: Simplify right side
    139,953.78x = 18,247,186,879.35
  5. Step 5: Solve for x
    x = 18,247,186,879.35/139,953.78
  6. Step 6: Final answer
    x = 130,380.09

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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.