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Finding the Fourth Proportional to 19,941.28, 29,912.04 and 6,090.28

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Solution

The fourth proportional to 19,941.28, 29,912.04 and 6,090.28 is: 9,135.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,941.28 : 29,912.04 = 6,090.28 : x
  2. Step 2: Convert to fraction form
    19,941.28/29,912.04 = 6,090.28/x
  3. Step 3: Cross multiply
    19,941.28x = 29,912.04 × 6,090.28
  4. Step 4: Simplify right side
    19,941.28x = 182,172,698.97
  5. Step 5: Solve for x
    x = 182,172,698.97/19,941.28
  6. Step 6: Final answer
    x = 9,135.46

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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.