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Finding the Fourth Proportional to 8,616.81, 12,926.43 and 3,068.97

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Solution

The fourth proportional to 8,616.81, 12,926.43 and 3,068.97 is: 4,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.81 : 12,926.43 = 3,068.97 : x
  2. Step 2: Convert to fraction form
    8,616.81/12,926.43 = 3,068.97/x
  3. Step 3: Cross multiply
    8,616.81x = 12,926.43 × 3,068.97
  4. Step 4: Simplify right side
    8,616.81x = 39,670,825.88
  5. Step 5: Solve for x
    x = 39,670,825.88/8,616.81
  6. Step 6: Final answer
    x = 4,603.89

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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.