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Finding the Fourth Proportional to 274,015.96, 411,051.30 and 74,339.64

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Solution

The fourth proportional to 274,015.96, 411,051.30 and 74,339.64 is: 111,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,015.96 : 411,051.30 = 74,339.64 : x
  2. Step 2: Convert to fraction form
    274,015.96/411,051.30 = 74,339.64/x
  3. Step 3: Cross multiply
    274,015.96x = 411,051.30 × 74,339.64
  4. Step 4: Simplify right side
    274,015.96x = 30,557,405,663.53
  5. Step 5: Solve for x
    x = 30,557,405,663.53/274,015.96
  6. Step 6: Final answer
    x = 111,516.88

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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.