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Finding the Fourth Proportional to 59,007.72, 81,447.78 and 38,879.40

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Solution

The fourth proportional to 59,007.72, 81,447.78 and 38,879.40 is: 53,664.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,007.72 : 81,447.78 = 38,879.40 : x
  2. Step 2: Convert to fraction form
    59,007.72/81,447.78 = 38,879.40/x
  3. Step 3: Cross multiply
    59,007.72x = 81,447.78 × 38,879.40
  4. Step 4: Simplify right side
    59,007.72x = 3,166,640,817.73
  5. Step 5: Solve for x
    x = 3,166,640,817.73/59,007.72
  6. Step 6: Final answer
    x = 53,664.86

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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.