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Finding the Fourth Proportional to 950,627.76, 1,311,375.68 and 644,600.64

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Solution

The fourth proportional to 950,627.76, 1,311,375.68 and 644,600.64 is: 889,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    950,627.76 : 1,311,375.68 = 644,600.64 : x
  2. Step 2: Convert to fraction form
    950,627.76/1,311,375.68 = 644,600.64/x
  3. Step 3: Cross multiply
    950,627.76x = 1,311,375.68 × 644,600.64
  4. Step 4: Simplify right side
    950,627.76x = 845,313,602,608.44
  5. Step 5: Solve for x
    x = 845,313,602,608.44/950,627.76
  6. Step 6: Final answer
    x = 889,216.20

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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.