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Finding the Fourth Proportional to 678,606, 936,515.16 and 376,819.44

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Solution

The fourth proportional to 678,606, 936,515.16 and 376,819.44 is: 520,032.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,606 : 936,515.16 = 376,819.44 : x
  2. Step 2: Convert to fraction form
    678,606/936,515.16 = 376,819.44/x
  3. Step 3: Cross multiply
    678,606x = 936,515.16 × 376,819.44
  4. Step 4: Simplify right side
    678,606x = 352,897,118,142.71
  5. Step 5: Solve for x
    x = 352,897,118,142.71/678,606
  6. Step 6: Final answer
    x = 520,032.42

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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.