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Finding the Fourth Proportional to 678,183.52, 935,860.08 and 406,262.56

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Solution

The fourth proportional to 678,183.52, 935,860.08 and 406,262.56 is: 560,622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,183.52 : 935,860.08 = 406,262.56 : x
  2. Step 2: Convert to fraction form
    678,183.52/935,860.08 = 406,262.56/x
  3. Step 3: Cross multiply
    678,183.52x = 935,860.08 × 406,262.56
  4. Step 4: Simplify right side
    678,183.52x = 380,204,911,902.61
  5. Step 5: Solve for x
    x = 380,204,911,902.61/678,183.52
  6. Step 6: Final answer
    x = 560,622.46

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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.