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Finding the Fourth Proportional to 6,920.61, 10,380 and 2,537.49

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Solution

The fourth proportional to 6,920.61, 10,380 and 2,537.49 is: 3,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.61 : 10,380 = 2,537.49 : x
  2. Step 2: Convert to fraction form
    6,920.61/10,380 = 2,537.49/x
  3. Step 3: Cross multiply
    6,920.61x = 10,380 × 2,537.49
  4. Step 4: Simplify right side
    6,920.61x = 26,339,146.20
  5. Step 5: Solve for x
    x = 26,339,146.20/6,920.61
  6. Step 6: Final answer
    x = 3,805.90

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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.