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Finding the Fourth Proportional to 326,855.43, 450,930.79 and 189,008.88

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Solution

The fourth proportional to 326,855.43, 450,930.79 and 189,008.88 is: 260,757.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,855.43 : 450,930.79 = 189,008.88 : x
  2. Step 2: Convert to fraction form
    326,855.43/450,930.79 = 189,008.88/x
  3. Step 3: Cross multiply
    326,855.43x = 450,930.79 × 189,008.88
  4. Step 4: Simplify right side
    326,855.43x = 85,229,923,102.89
  5. Step 5: Solve for x
    x = 85,229,923,102.89/326,855.43
  6. Step 6: Final answer
    x = 260,757.25

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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.