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Finding the Fourth Proportional to 3,303.86, 4,556.81 and 2,109.21

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Solution

The fourth proportional to 3,303.86, 4,556.81 and 2,109.21 is: 2,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,303.86 : 4,556.81 = 2,109.21 : x
  2. Step 2: Convert to fraction form
    3,303.86/4,556.81 = 2,109.21/x
  3. Step 3: Cross multiply
    3,303.86x = 4,556.81 × 2,109.21
  4. Step 4: Simplify right side
    3,303.86x = 9,611,269.22
  5. Step 5: Solve for x
    x = 9,611,269.22/3,303.86
  6. Step 6: Final answer
    x = 2,909.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.