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Finding the Fourth Proportional to 8,591.21, 12,883.16 and 3,045.95

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Solution

The fourth proportional to 8,591.21, 12,883.16 and 3,045.95 is: 4,567.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.21 : 12,883.16 = 3,045.95 : x
  2. Step 2: Convert to fraction form
    8,591.21/12,883.16 = 3,045.95/x
  3. Step 3: Cross multiply
    8,591.21x = 12,883.16 × 3,045.95
  4. Step 4: Simplify right side
    8,591.21x = 39,241,404.40
  5. Step 5: Solve for x
    x = 39,241,404.40/8,591.21
  6. Step 6: Final answer
    x = 4,567.63

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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.