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Finding the Fourth Proportional to 68,050.93, 93,920.50 and 48,993.78

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Solution

The fourth proportional to 68,050.93, 93,920.50 and 48,993.78 is: 67,618.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,050.93 : 93,920.50 = 48,993.78 : x
  2. Step 2: Convert to fraction form
    68,050.93/93,920.50 = 48,993.78/x
  3. Step 3: Cross multiply
    68,050.93x = 93,920.50 × 48,993.78
  4. Step 4: Simplify right side
    68,050.93x = 4,601,520,314.49
  5. Step 5: Solve for x
    x = 4,601,520,314.49/68,050.93
  6. Step 6: Final answer
    x = 67,618.77

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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.