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Finding the Fourth Proportional to 245,674.50, 368,511.72 and 68,181.56

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Solution

The fourth proportional to 245,674.50, 368,511.72 and 68,181.56 is: 102,272.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,674.50 : 368,511.72 = 68,181.56 : x
  2. Step 2: Convert to fraction form
    245,674.50/368,511.72 = 68,181.56/x
  3. Step 3: Cross multiply
    245,674.50x = 368,511.72 × 68,181.56
  4. Step 4: Simplify right side
    245,674.50x = 25,125,703,947.88
  5. Step 5: Solve for x
    x = 25,125,703,947.88/245,674.50
  6. Step 6: Final answer
    x = 102,272.33

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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.