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Finding the Fourth Proportional to 3,994.96, 5,515.72 and 2,503.44

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Solution

The fourth proportional to 3,994.96, 5,515.72 and 2,503.44 is: 3,456.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.96 : 5,515.72 = 2,503.44 : x
  2. Step 2: Convert to fraction form
    3,994.96/5,515.72 = 2,503.44/x
  3. Step 3: Cross multiply
    3,994.96x = 5,515.72 × 2,503.44
  4. Step 4: Simplify right side
    3,994.96x = 13,808,274.08
  5. Step 5: Solve for x
    x = 13,808,274.08/3,994.96
  6. Step 6: Final answer
    x = 3,456.42

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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.