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Finding the Fourth Proportional to 7,266.68, 10,890.42 and 2,645.24

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Solution

The fourth proportional to 7,266.68, 10,890.42 and 2,645.24 is: 3,964.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,266.68 : 10,890.42 = 2,645.24 : x
  2. Step 2: Convert to fraction form
    7,266.68/10,890.42 = 2,645.24/x
  3. Step 3: Cross multiply
    7,266.68x = 10,890.42 × 2,645.24
  4. Step 4: Simplify right side
    7,266.68x = 28,807,774.60
  5. Step 5: Solve for x
    x = 28,807,774.60/7,266.68
  6. Step 6: Final answer
    x = 3,964.37

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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.