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Finding the Fourth Proportional to 73,091.38, 100,866.11 and 39,557.38

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Solution

The fourth proportional to 73,091.38, 100,866.11 and 39,557.38 is: 54,589.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,091.38 : 100,866.11 = 39,557.38 : x
  2. Step 2: Convert to fraction form
    73,091.38/100,866.11 = 39,557.38/x
  3. Step 3: Cross multiply
    73,091.38x = 100,866.11 × 39,557.38
  4. Step 4: Simplify right side
    73,091.38x = 3,989,999,042.39
  5. Step 5: Solve for x
    x = 3,989,999,042.39/73,091.38
  6. Step 6: Final answer
    x = 54,589.19

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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.