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Finding the Fourth Proportional to 73,091.07, 100,865.69 and 39,557.07

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Solution

The fourth proportional to 73,091.07, 100,865.69 and 39,557.07 is: 54,588.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,091.07 : 100,865.69 = 39,557.07 : x
  2. Step 2: Convert to fraction form
    73,091.07/100,865.69 = 39,557.07/x
  3. Step 3: Cross multiply
    73,091.07x = 100,865.69 × 39,557.07
  4. Step 4: Simplify right side
    73,091.07x = 3,989,951,110.48
  5. Step 5: Solve for x
    x = 3,989,951,110.48/73,091.07
  6. Step 6: Final answer
    x = 54,588.76

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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.