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Finding the Fourth Proportional to 394,889.40, 592,334.10 and 353,555.10

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Solution

The fourth proportional to 394,889.40, 592,334.10 and 353,555.10 is: 530,332.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,889.40 : 592,334.10 = 353,555.10 : x
  2. Step 2: Convert to fraction form
    394,889.40/592,334.10 = 353,555.10/x
  3. Step 3: Cross multiply
    394,889.40x = 592,334.10 × 353,555.10
  4. Step 4: Simplify right side
    394,889.40x = 209,422,741,958.91
  5. Step 5: Solve for x
    x = 209,422,741,958.91/394,889.40
  6. Step 6: Final answer
    x = 530,332.65

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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.