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Finding the Fourth Proportional to 7,908.74, 11,855.36 and 4,400.43

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Solution

The fourth proportional to 7,908.74, 11,855.36 and 4,400.43 is: 6,596.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.74 : 11,855.36 = 4,400.43 : x
  2. Step 2: Convert to fraction form
    7,908.74/11,855.36 = 4,400.43/x
  3. Step 3: Cross multiply
    7,908.74x = 11,855.36 × 4,400.43
  4. Step 4: Simplify right side
    7,908.74x = 52,168,648.35
  5. Step 5: Solve for x
    x = 52,168,648.35/7,908.74
  6. Step 6: Final answer
    x = 6,596.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.