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Finding the Fourth Proportional to 55,393.92, 76,524.48 and 47,928.96

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Solution

The fourth proportional to 55,393.92, 76,524.48 and 47,928.96 is: 66,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,393.92 : 76,524.48 = 47,928.96 : x
  2. Step 2: Convert to fraction form
    55,393.92/76,524.48 = 47,928.96/x
  3. Step 3: Cross multiply
    55,393.92x = 76,524.48 × 47,928.96
  4. Step 4: Simplify right side
    55,393.92x = 3,667,738,740.94
  5. Step 5: Solve for x
    x = 3,667,738,740.94/55,393.92
  6. Step 6: Final answer
    x = 66,211.94

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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.