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Finding the Fourth Proportional to 383,818.80, 575,728.20 and 217,930.80

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Solution

The fourth proportional to 383,818.80, 575,728.20 and 217,930.80 is: 326,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,818.80 : 575,728.20 = 217,930.80 : x
  2. Step 2: Convert to fraction form
    383,818.80/575,728.20 = 217,930.80/x
  3. Step 3: Cross multiply
    383,818.80x = 575,728.20 × 217,930.80
  4. Step 4: Simplify right side
    383,818.80x = 125,468,907,208.56
  5. Step 5: Solve for x
    x = 125,468,907,208.56/383,818.80
  6. Step 6: Final answer
    x = 326,896.20

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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.