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Finding the Fourth Proportional to 68,969.10, 103,451.59 and 19,052.19

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Solution

The fourth proportional to 68,969.10, 103,451.59 and 19,052.19 is: 28,577.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,969.10 : 103,451.59 = 19,052.19 : x
  2. Step 2: Convert to fraction form
    68,969.10/103,451.59 = 19,052.19/x
  3. Step 3: Cross multiply
    68,969.10x = 103,451.59 × 19,052.19
  4. Step 4: Simplify right side
    68,969.10x = 1,970,979,372.30
  5. Step 5: Solve for x
    x = 1,970,979,372.30/68,969.10
  6. Step 6: Final answer
    x = 28,577.71

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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.