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Finding the Fourth Proportional to 53,611, 80,416.66 and 16,675

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Solution

The fourth proportional to 53,611, 80,416.66 and 16,675 is: 25,012.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,611 : 80,416.66 = 16,675 : x
  2. Step 2: Convert to fraction form
    53,611/80,416.66 = 16,675/x
  3. Step 3: Cross multiply
    53,611x = 80,416.66 × 16,675
  4. Step 4: Simplify right side
    53,611x = 1,340,947,805.50
  5. Step 5: Solve for x
    x = 1,340,947,805.50/53,611
  6. Step 6: Final answer
    x = 25,012.55

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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.