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Finding the Fourth Proportional to 62,067.92, 85,682.76 and 39,724.88

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Solution

The fourth proportional to 62,067.92, 85,682.76 and 39,724.88 is: 54,838.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,067.92 : 85,682.76 = 39,724.88 : x
  2. Step 2: Convert to fraction form
    62,067.92/85,682.76 = 39,724.88/x
  3. Step 3: Cross multiply
    62,067.92x = 85,682.76 × 39,724.88
  4. Step 4: Simplify right side
    62,067.92x = 3,403,737,359.07
  5. Step 5: Solve for x
    x = 3,403,737,359.07/62,067.92
  6. Step 6: Final answer
    x = 54,838.91

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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.