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Finding the Fourth Proportional to 19,074.64, 28,611.96 and 6,754

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Solution

The fourth proportional to 19,074.64, 28,611.96 and 6,754 is: 10,131

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,074.64 : 28,611.96 = 6,754 : x
  2. Step 2: Convert to fraction form
    19,074.64/28,611.96 = 6,754/x
  3. Step 3: Cross multiply
    19,074.64x = 28,611.96 × 6,754
  4. Step 4: Simplify right side
    19,074.64x = 193,245,177.84
  5. Step 5: Solve for x
    x = 193,245,177.84/19,074.64
  6. Step 6: Final answer
    x = 10,131

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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.