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Finding the Fourth Proportional to 6,478.76, 9,718.14 and 2,096.11

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Solution

The fourth proportional to 6,478.76, 9,718.14 and 2,096.11 is: 3,144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.76 : 9,718.14 = 2,096.11 : x
  2. Step 2: Convert to fraction form
    6,478.76/9,718.14 = 2,096.11/x
  3. Step 3: Cross multiply
    6,478.76x = 9,718.14 × 2,096.11
  4. Step 4: Simplify right side
    6,478.76x = 20,370,310.44
  5. Step 5: Solve for x
    x = 20,370,310.44/6,478.76
  6. Step 6: Final answer
    x = 3,144.17

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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.