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Finding the Fourth Proportional to 61,790.78, 85,270.83 and 34,933.22

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Solution

The fourth proportional to 61,790.78, 85,270.83 and 34,933.22 is: 48,207.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,790.78 : 85,270.83 = 34,933.22 : x
  2. Step 2: Convert to fraction form
    61,790.78/85,270.83 = 34,933.22/x
  3. Step 3: Cross multiply
    61,790.78x = 85,270.83 × 34,933.22
  4. Step 4: Simplify right side
    61,790.78x = 2,978,784,663.97
  5. Step 5: Solve for x
    x = 2,978,784,663.97/61,790.78
  6. Step 6: Final answer
    x = 48,207.59

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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.