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Finding the Fourth Proportional to 68,611.77, 102,903.26 and 19,352.25

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Solution

The fourth proportional to 68,611.77, 102,903.26 and 19,352.25 is: 29,024.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,611.77 : 102,903.26 = 19,352.25 : x
  2. Step 2: Convert to fraction form
    68,611.77/102,903.26 = 19,352.25/x
  3. Step 3: Cross multiply
    68,611.77x = 102,903.26 × 19,352.25
  4. Step 4: Simplify right side
    68,611.77x = 1,991,409,516.57
  5. Step 5: Solve for x
    x = 1,991,409,516.57/68,611.77
  6. Step 6: Final answer
    x = 29,024.31

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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.