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Finding the Fourth Proportional to 1,976,885.19, 2,965,782.87 and 839,683.40

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Solution

The fourth proportional to 1,976,885.19, 2,965,782.87 and 839,683.40 is: 1,259,718.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976,885.19 : 2,965,782.87 = 839,683.40 : x
  2. Step 2: Convert to fraction form
    1,976,885.19/2,965,782.87 = 839,683.40/x
  3. Step 3: Cross multiply
    1,976,885.19x = 2,965,782.87 × 839,683.40
  4. Step 4: Simplify right side
    1,976,885.19x = 2,490,318,629,114.44
  5. Step 5: Solve for x
    x = 2,490,318,629,114.44/1,976,885.19
  6. Step 6: Final answer
    x = 1,259,718.39

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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.