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Finding the Fourth Proportional to 7,493, 11,239.50 and 2,021

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Solution

The fourth proportional to 7,493, 11,239.50 and 2,021 is: 3,031.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,493 : 11,239.50 = 2,021 : x
  2. Step 2: Convert to fraction form
    7,493/11,239.50 = 2,021/x
  3. Step 3: Cross multiply
    7,493x = 11,239.50 × 2,021
  4. Step 4: Simplify right side
    7,493x = 22,715,029.50
  5. Step 5: Solve for x
    x = 22,715,029.50/7,493
  6. Step 6: Final answer
    x = 3,031.50

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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.