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Finding the Fourth Proportional to 321,676.65, 443,967.01 and 178,482.83

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Solution

The fourth proportional to 321,676.65, 443,967.01 and 178,482.83 is: 246,335.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,676.65 : 443,967.01 = 178,482.83 : x
  2. Step 2: Convert to fraction form
    321,676.65/443,967.01 = 178,482.83/x
  3. Step 3: Cross multiply
    321,676.65x = 443,967.01 × 178,482.83
  4. Step 4: Simplify right side
    321,676.65x = 79,240,485,705.40
  5. Step 5: Solve for x
    x = 79,240,485,705.40/321,676.65
  6. Step 6: Final answer
    x = 246,335.83

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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.