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Finding the Fourth Proportional to 5,791,783.05, 8,691,821.78 and 2,428,403.85

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Solution

The fourth proportional to 5,791,783.05, 8,691,821.78 and 2,428,403.85 is: 3,644,344.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791,783.05 : 8,691,821.78 = 2,428,403.85 : x
  2. Step 2: Convert to fraction form
    5,791,783.05/8,691,821.78 = 2,428,403.85/x
  3. Step 3: Cross multiply
    5,791,783.05x = 8,691,821.78 × 2,428,403.85
  4. Step 4: Simplify right side
    5,791,783.05x = 21,107,253,461,923.84
  5. Step 5: Solve for x
    x = 21,107,253,461,923.84/5,791,783.05
  6. Step 6: Final answer
    x = 3,644,344.63

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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.