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Finding the Fourth Proportional to 636,418.03, 954,891.39 and 257,606.56

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Solution

The fourth proportional to 636,418.03, 954,891.39 and 257,606.56 is: 386,516.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,418.03 : 954,891.39 = 257,606.56 : x
  2. Step 2: Convert to fraction form
    636,418.03/954,891.39 = 257,606.56/x
  3. Step 3: Cross multiply
    636,418.03x = 954,891.39 × 257,606.56
  4. Step 4: Simplify right side
    636,418.03x = 245,986,286,151.52
  5. Step 5: Solve for x
    x = 245,986,286,151.52/636,418.03
  6. Step 6: Final answer
    x = 386,516.84

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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.