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Finding the Fourth Proportional to 5,065.61, 7,579.91 and 2,986.61

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Solution

The fourth proportional to 5,065.61, 7,579.91 and 2,986.61 is: 4,469.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,065.61 : 7,579.91 = 2,986.61 : x
  2. Step 2: Convert to fraction form
    5,065.61/7,579.91 = 2,986.61/x
  3. Step 3: Cross multiply
    5,065.61x = 7,579.91 × 2,986.61
  4. Step 4: Simplify right side
    5,065.61x = 22,638,204.57
  5. Step 5: Solve for x
    x = 22,638,204.57/5,065.61
  6. Step 6: Final answer
    x = 4,469.00

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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.