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Finding the Fourth Proportional to 8,382.88, 12,579.61 and 4,687.53

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Solution

The fourth proportional to 8,382.88, 12,579.61 and 4,687.53 is: 7,034.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,382.88 : 12,579.61 = 4,687.53 : x
  2. Step 2: Convert to fraction form
    8,382.88/12,579.61 = 4,687.53/x
  3. Step 3: Cross multiply
    8,382.88x = 12,579.61 × 4,687.53
  4. Step 4: Simplify right side
    8,382.88x = 58,967,299.26
  5. Step 5: Solve for x
    x = 58,967,299.26/8,382.88
  6. Step 6: Final answer
    x = 7,034.25

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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.