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Finding the Fourth Proportional to 67,933.92, 93,759.96 and 39,639.54

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Solution

The fourth proportional to 67,933.92, 93,759.96 and 39,639.54 is: 54,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,933.92 : 93,759.96 = 39,639.54 : x
  2. Step 2: Convert to fraction form
    67,933.92/93,759.96 = 39,639.54/x
  3. Step 3: Cross multiply
    67,933.92x = 93,759.96 × 39,639.54
  4. Step 4: Simplify right side
    67,933.92x = 3,716,601,684.82
  5. Step 5: Solve for x
    x = 3,716,601,684.82/67,933.92
  6. Step 6: Final answer
    x = 54,709.07

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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.