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Finding the Fourth Proportional to 1,791,606, 2,472,416.31 and 986,790

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Solution

The fourth proportional to 1,791,606, 2,472,416.31 and 986,790 is: 1,361,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791,606 : 2,472,416.31 = 986,790 : x
  2. Step 2: Convert to fraction form
    1,791,606/2,472,416.31 = 986,790/x
  3. Step 3: Cross multiply
    1,791,606x = 2,472,416.31 × 986,790
  4. Step 4: Simplify right side
    1,791,606x = 2,439,755,690,544.90
  5. Step 5: Solve for x
    x = 2,439,755,690,544.90/1,791,606
  6. Step 6: Final answer
    x = 1,361,770.22

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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.