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Finding the Fourth Proportional to 321,647.06, 443,893.08 and 185,705.93

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Solution

The fourth proportional to 321,647.06, 443,893.08 and 185,705.93 is: 256,285.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,647.06 : 443,893.08 = 185,705.93 : x
  2. Step 2: Convert to fraction form
    321,647.06/443,893.08 = 185,705.93/x
  3. Step 3: Cross multiply
    321,647.06x = 443,893.08 × 185,705.93
  4. Step 4: Simplify right side
    321,647.06x = 82,433,577,241.96
  5. Step 5: Solve for x
    x = 82,433,577,241.96/321,647.06
  6. Step 6: Final answer
    x = 256,285.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.