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Finding the Fourth Proportional to 425,418.70, 587,081.68 and 234,438.94

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Solution

The fourth proportional to 425,418.70, 587,081.68 and 234,438.94 is: 323,527.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,418.70 : 587,081.68 = 234,438.94 : x
  2. Step 2: Convert to fraction form
    425,418.70/587,081.68 = 234,438.94/x
  3. Step 3: Cross multiply
    425,418.70x = 587,081.68 × 234,438.94
  4. Step 4: Simplify right side
    425,418.70x = 137,634,806,752.62
  5. Step 5: Solve for x
    x = 137,634,806,752.62/425,418.70
  6. Step 6: Final answer
    x = 323,527.87

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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.