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Finding the Fourth Proportional to 774,443, 1,068,723.48 and 425,589.12

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Solution

The fourth proportional to 774,443, 1,068,723.48 and 425,589.12 is: 587,308.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,443 : 1,068,723.48 = 425,589.12 : x
  2. Step 2: Convert to fraction form
    774,443/1,068,723.48 = 425,589.12/x
  3. Step 3: Cross multiply
    774,443x = 1,068,723.48 × 425,589.12
  4. Step 4: Simplify right side
    774,443x = 454,837,085,376.54
  5. Step 5: Solve for x
    x = 454,837,085,376.54/774,443
  6. Step 6: Final answer
    x = 587,308.67

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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.