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Finding the Fourth Proportional to 691,630.65, 954,305.96 and 419,841.63

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Solution

The fourth proportional to 691,630.65, 954,305.96 and 419,841.63 is: 579,293.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,630.65 : 954,305.96 = 419,841.63 : x
  2. Step 2: Convert to fraction form
    691,630.65/954,305.96 = 419,841.63/x
  3. Step 3: Cross multiply
    691,630.65x = 954,305.96 × 419,841.63
  4. Step 4: Simplify right side
    691,630.65x = 400,657,367,665.91
  5. Step 5: Solve for x
    x = 400,657,367,665.91/691,630.65
  6. Step 6: Final answer
    x = 579,293.83

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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.