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Finding the Fourth Proportional to 96,960.80, 133,804.32 and 53,939.82

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Solution

The fourth proportional to 96,960.80, 133,804.32 and 53,939.82 is: 74,436.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,960.80 : 133,804.32 = 53,939.82 : x
  2. Step 2: Convert to fraction form
    96,960.80/133,804.32 = 53,939.82/x
  3. Step 3: Cross multiply
    96,960.80x = 133,804.32 × 53,939.82
  4. Step 4: Simplify right side
    96,960.80x = 7,217,380,936.02
  5. Step 5: Solve for x
    x = 7,217,380,936.02/96,960.80
  6. Step 6: Final answer
    x = 74,436.07

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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.