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Finding the Fourth Proportional to 19,431.09, 29,146.94 and 6,103.65

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Solution

The fourth proportional to 19,431.09, 29,146.94 and 6,103.65 is: 9,155.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.09 : 29,146.94 = 6,103.65 : x
  2. Step 2: Convert to fraction form
    19,431.09/29,146.94 = 6,103.65/x
  3. Step 3: Cross multiply
    19,431.09x = 29,146.94 × 6,103.65
  4. Step 4: Simplify right side
    19,431.09x = 177,902,822.00
  5. Step 5: Solve for x
    x = 177,902,822.00/19,431.09
  6. Step 6: Final answer
    x = 9,155.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.