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Finding the Fourth Proportional to 65,882.78, 90,917.60 and 35,667.33

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Solution

The fourth proportional to 65,882.78, 90,917.60 and 35,667.33 is: 49,220.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,882.78 : 90,917.60 = 35,667.33 : x
  2. Step 2: Convert to fraction form
    65,882.78/90,917.60 = 35,667.33/x
  3. Step 3: Cross multiply
    65,882.78x = 90,917.60 × 35,667.33
  4. Step 4: Simplify right side
    65,882.78x = 3,242,788,042.01
  5. Step 5: Solve for x
    x = 3,242,788,042.01/65,882.78
  6. Step 6: Final answer
    x = 49,220.57

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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.