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Finding the Fourth Proportional to 806,896.88, 1,211,093.40 and 407,818.52

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Solution

The fourth proportional to 806,896.88, 1,211,093.40 and 407,818.52 is: 612,105.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,896.88 : 1,211,093.40 = 407,818.52 : x
  2. Step 2: Convert to fraction form
    806,896.88/1,211,093.40 = 407,818.52/x
  3. Step 3: Cross multiply
    806,896.88x = 1,211,093.40 × 407,818.52
  4. Step 4: Simplify right side
    806,896.88x = 493,906,317,969.77
  5. Step 5: Solve for x
    x = 493,906,317,969.77/806,896.88
  6. Step 6: Final answer
    x = 612,105.87

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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.