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Finding the Fourth Proportional to 19,963.28, 29,943.84 and 6,112.28

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Solution

The fourth proportional to 19,963.28, 29,943.84 and 6,112.28 is: 9,168.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,963.28 : 29,943.84 = 6,112.28 : x
  2. Step 2: Convert to fraction form
    19,963.28/29,943.84 = 6,112.28/x
  3. Step 3: Cross multiply
    19,963.28x = 29,943.84 × 6,112.28
  4. Step 4: Simplify right side
    19,963.28x = 183,025,134.36
  5. Step 5: Solve for x
    x = 183,025,134.36/19,963.28
  6. Step 6: Final answer
    x = 9,168.09

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1.5x scale

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.