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Finding the Fourth Proportional to 16,440.75, 24,675.75 and 7,680.60

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Solution

The fourth proportional to 16,440.75, 24,675.75 and 7,680.60 is: 11,527.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,440.75 : 24,675.75 = 7,680.60 : x
  2. Step 2: Convert to fraction form
    16,440.75/24,675.75 = 7,680.60/x
  3. Step 3: Cross multiply
    16,440.75x = 24,675.75 × 7,680.60
  4. Step 4: Simplify right side
    16,440.75x = 189,524,565.45
  5. Step 5: Solve for x
    x = 189,524,565.45/16,440.75
  6. Step 6: Final answer
    x = 11,527.73

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1.5x scale

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.