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Finding the Fourth Proportional to 12,380.65, 18,573.86 and 4,060.15

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Solution

The fourth proportional to 12,380.65, 18,573.86 and 4,060.15 is: 6,091.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.65 : 18,573.86 = 4,060.15 : x
  2. Step 2: Convert to fraction form
    12,380.65/18,573.86 = 4,060.15/x
  3. Step 3: Cross multiply
    12,380.65x = 18,573.86 × 4,060.15
  4. Step 4: Simplify right side
    12,380.65x = 75,412,657.68
  5. Step 5: Solve for x
    x = 75,412,657.68/12,380.65
  6. Step 6: Final answer
    x = 6,091.17

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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.