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Finding the Fourth Proportional to 5,086,736.76, 7,630,107.87 and 1,891,447.74

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Solution

The fourth proportional to 5,086,736.76, 7,630,107.87 and 1,891,447.74 is: 2,837,172.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086,736.76 : 7,630,107.87 = 1,891,447.74 : x
  2. Step 2: Convert to fraction form
    5,086,736.76/7,630,107.87 = 1,891,447.74/x
  3. Step 3: Cross multiply
    5,086,736.76x = 7,630,107.87 × 1,891,447.74
  4. Step 4: Simplify right side
    5,086,736.76x = 14,431,950,286,667.71
  5. Step 5: Solve for x
    x = 14,431,950,286,667.71/5,086,736.76
  6. Step 6: Final answer
    x = 2,837,172.63

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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.