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Finding the Fourth Proportional to 62,630.46, 86,379.75 and 55,060.74

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Solution

The fourth proportional to 62,630.46, 86,379.75 and 55,060.74 is: 75,939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,630.46 : 86,379.75 = 55,060.74 : x
  2. Step 2: Convert to fraction form
    62,630.46/86,379.75 = 55,060.74/x
  3. Step 3: Cross multiply
    62,630.46x = 86,379.75 × 55,060.74
  4. Step 4: Simplify right side
    62,630.46x = 4,756,132,956.02
  5. Step 5: Solve for x
    x = 4,756,132,956.02/62,630.46
  6. Step 6: Final answer
    x = 75,939.61

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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.