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Finding the Fourth Proportional to 347,172.85, 479,079.26 and 194,181.49

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Solution

The fourth proportional to 347,172.85, 479,079.26 and 194,181.49 is: 267,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,172.85 : 479,079.26 = 194,181.49 : x
  2. Step 2: Convert to fraction form
    347,172.85/479,079.26 = 194,181.49/x
  3. Step 3: Cross multiply
    347,172.85x = 479,079.26 × 194,181.49
  4. Step 4: Simplify right side
    347,172.85x = 93,028,323,822.65
  5. Step 5: Solve for x
    x = 93,028,323,822.65/347,172.85
  6. Step 6: Final answer
    x = 267,959.67

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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.