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Finding the Fourth Proportional to 19,963.30, 29,944.95 and 6,112.30

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Solution

The fourth proportional to 19,963.30, 29,944.95 and 6,112.30 is: 9,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,963.30 : 29,944.95 = 6,112.30 : x
  2. Step 2: Convert to fraction form
    19,963.30/29,944.95 = 6,112.30/x
  3. Step 3: Cross multiply
    19,963.30x = 29,944.95 × 6,112.30
  4. Step 4: Simplify right side
    19,963.30x = 183,032,517.89
  5. Step 5: Solve for x
    x = 183,032,517.89/19,963.30
  6. Step 6: Final answer
    x = 9,168.45

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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.