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Finding the Fourth Proportional to 449,454.11, 619,393.92 and 321,908.27

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Solution

The fourth proportional to 449,454.11, 619,393.92 and 321,908.27 is: 443,622.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,454.11 : 619,393.92 = 321,908.27 : x
  2. Step 2: Convert to fraction form
    449,454.11/619,393.92 = 321,908.27/x
  3. Step 3: Cross multiply
    449,454.11x = 619,393.92 × 321,908.27
  4. Step 4: Simplify right side
    449,454.11x = 199,388,025,235.72
  5. Step 5: Solve for x
    x = 199,388,025,235.72/449,454.11
  6. Step 6: Final answer
    x = 443,622.65

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1.5x scale

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.