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Finding the Fourth Proportional to 7,351.18, 11,012 and 3,396.90

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Solution

The fourth proportional to 7,351.18, 11,012 and 3,396.90 is: 5,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.18 : 11,012 = 3,396.90 : x
  2. Step 2: Convert to fraction form
    7,351.18/11,012 = 3,396.90/x
  3. Step 3: Cross multiply
    7,351.18x = 11,012 × 3,396.90
  4. Step 4: Simplify right side
    7,351.18x = 37,406,662.80
  5. Step 5: Solve for x
    x = 37,406,662.80/7,351.18
  6. Step 6: Final answer
    x = 5,088.52

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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.