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Finding the Fourth Proportional to 73,513.38, 101,448.46 and 39,979.38

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Solution

The fourth proportional to 73,513.38, 101,448.46 and 39,979.38 is: 55,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,513.38 : 101,448.46 = 39,979.38 : x
  2. Step 2: Convert to fraction form
    73,513.38/101,448.46 = 39,979.38/x
  3. Step 3: Cross multiply
    73,513.38x = 101,448.46 × 39,979.38
  4. Step 4: Simplify right side
    73,513.38x = 4,055,846,532.75
  5. Step 5: Solve for x
    x = 4,055,846,532.75/73,513.38
  6. Step 6: Final answer
    x = 55,171.54

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1.5x scale

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.