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Finding the Fourth Proportional to 59,638.75, 89,469.06 and 28,474

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Solution

The fourth proportional to 59,638.75, 89,469.06 and 28,474 is: 42,716.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,638.75 : 89,469.06 = 28,474 : x
  2. Step 2: Convert to fraction form
    59,638.75/89,469.06 = 28,474/x
  3. Step 3: Cross multiply
    59,638.75x = 89,469.06 × 28,474
  4. Step 4: Simplify right side
    59,638.75x = 2,547,542,014.44
  5. Step 5: Solve for x
    x = 2,547,542,014.44/59,638.75
  6. Step 6: Final answer
    x = 42,716.22

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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.