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Finding the Fourth Proportional to 812,437.93, 1,121,150.64 and 449,854

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Solution

The fourth proportional to 812,437.93, 1,121,150.64 and 449,854 is: 620,790.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,437.93 : 1,121,150.64 = 449,854 : x
  2. Step 2: Convert to fraction form
    812,437.93/1,121,150.64 = 449,854/x
  3. Step 3: Cross multiply
    812,437.93x = 1,121,150.64 × 449,854
  4. Step 4: Simplify right side
    812,437.93x = 504,354,100,006.56
  5. Step 5: Solve for x
    x = 504,354,100,006.56/812,437.93
  6. Step 6: Final answer
    x = 620,790.93

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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.