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Finding the Fourth Proportional to 61,743.82, 85,198.31 and 39,042.76

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Solution

The fourth proportional to 61,743.82, 85,198.31 and 39,042.76 is: 53,873.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,743.82 : 85,198.31 = 39,042.76 : x
  2. Step 2: Convert to fraction form
    61,743.82/85,198.31 = 39,042.76/x
  3. Step 3: Cross multiply
    61,743.82x = 85,198.31 × 39,042.76
  4. Step 4: Simplify right side
    61,743.82x = 3,326,377,169.74
  5. Step 5: Solve for x
    x = 3,326,377,169.74/61,743.82
  6. Step 6: Final answer
    x = 53,873.85

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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.