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Finding the Fourth Proportional to 52,653.26, 78,969.36 and 19,361.99

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Solution

The fourth proportional to 52,653.26, 78,969.36 and 19,361.99 is: 29,039.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,653.26 : 78,969.36 = 19,361.99 : x
  2. Step 2: Convert to fraction form
    52,653.26/78,969.36 = 19,361.99/x
  3. Step 3: Cross multiply
    52,653.26x = 78,969.36 × 19,361.99
  4. Step 4: Simplify right side
    52,653.26x = 1,529,003,958.63
  5. Step 5: Solve for x
    x = 1,529,003,958.63/52,653.26
  6. Step 6: Final answer
    x = 29,039.11

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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.