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Finding the Fourth Proportional to 644,808.20, 967,212.30 and 395,630.60

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Solution

The fourth proportional to 644,808.20, 967,212.30 and 395,630.60 is: 593,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,808.20 : 967,212.30 = 395,630.60 : x
  2. Step 2: Convert to fraction form
    644,808.20/967,212.30 = 395,630.60/x
  3. Step 3: Cross multiply
    644,808.20x = 967,212.30 × 395,630.60
  4. Step 4: Simplify right side
    644,808.20x = 382,658,782,576.38
  5. Step 5: Solve for x
    x = 382,658,782,576.38/644,808.20
  6. Step 6: Final answer
    x = 593,445.90

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1.5x scale

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.