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Finding the Fourth Proportional to 7,974.95, 11,005.73 and 4,438.68

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Solution

The fourth proportional to 7,974.95, 11,005.73 and 4,438.68 is: 6,125.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.95 : 11,005.73 = 4,438.68 : x
  2. Step 2: Convert to fraction form
    7,974.95/11,005.73 = 4,438.68/x
  3. Step 3: Cross multiply
    7,974.95x = 11,005.73 × 4,438.68
  4. Step 4: Simplify right side
    7,974.95x = 48,850,891.44
  5. Step 5: Solve for x
    x = 48,850,891.44/7,974.95
  6. Step 6: Final answer
    x = 6,125.55

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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.