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Finding the Fourth Proportional to 61,750.60, 85,215.90 and 33,456.28

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Solution

The fourth proportional to 61,750.60, 85,215.90 and 33,456.28 is: 46,169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,750.60 : 85,215.90 = 33,456.28 : x
  2. Step 2: Convert to fraction form
    61,750.60/85,215.90 = 33,456.28/x
  3. Step 3: Cross multiply
    61,750.60x = 85,215.90 × 33,456.28
  4. Step 4: Simplify right side
    61,750.60x = 2,851,007,010.85
  5. Step 5: Solve for x
    x = 2,851,007,010.85/61,750.60
  6. Step 6: Final answer
    x = 46,169.71

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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.