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Finding the Fourth Proportional to 321,235.89, 443,298.92 and 177,994.68

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Solution

The fourth proportional to 321,235.89, 443,298.92 and 177,994.68 is: 245,629.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,235.89 : 443,298.92 = 177,994.68 : x
  2. Step 2: Convert to fraction form
    321,235.89/443,298.92 = 177,994.68/x
  3. Step 3: Cross multiply
    321,235.89x = 443,298.92 × 177,994.68
  4. Step 4: Simplify right side
    321,235.89x = 78,904,848,964.76
  5. Step 5: Solve for x
    x = 78,904,848,964.76/321,235.89
  6. Step 6: Final answer
    x = 245,629.00

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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.