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Finding the Fourth Proportional to 6,978.81, 10,468.22 and 2,048.42

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Solution

The fourth proportional to 6,978.81, 10,468.22 and 2,048.42 is: 3,072.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978.81 : 10,468.22 = 2,048.42 : x
  2. Step 2: Convert to fraction form
    6,978.81/10,468.22 = 2,048.42/x
  3. Step 3: Cross multiply
    6,978.81x = 10,468.22 × 2,048.42
  4. Step 4: Simplify right side
    6,978.81x = 21,443,248.63
  5. Step 5: Solve for x
    x = 21,443,248.63/6,978.81
  6. Step 6: Final answer
    x = 3,072.62

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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.