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Finding the Fourth Proportional to 20,576.04, 30,868.94 and 6,725

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Solution

The fourth proportional to 20,576.04, 30,868.94 and 6,725 is: 10,089.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.04 : 30,868.94 = 6,725 : x
  2. Step 2: Convert to fraction form
    20,576.04/30,868.94 = 6,725/x
  3. Step 3: Cross multiply
    20,576.04x = 30,868.94 × 6,725
  4. Step 4: Simplify right side
    20,576.04x = 207,593,621.50
  5. Step 5: Solve for x
    x = 207,593,621.50/20,576.04
  6. Step 6: Final answer
    x = 10,089.09

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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.