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Finding the Fourth Proportional to 1,822,705.80, 2,728,809.90 and 1,114,117.80

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Solution

The fourth proportional to 1,822,705.80, 2,728,809.90 and 1,114,117.80 is: 1,667,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,822,705.80 : 2,728,809.90 = 1,114,117.80 : x
  2. Step 2: Convert to fraction form
    1,822,705.80/2,728,809.90 = 1,114,117.80/x
  3. Step 3: Cross multiply
    1,822,705.80x = 2,728,809.90 × 1,114,117.80
  4. Step 4: Simplify right side
    1,822,705.80x = 3,040,215,682,406.22
  5. Step 5: Solve for x
    x = 3,040,215,682,406.22/1,822,705.80
  6. Step 6: Final answer
    x = 1,667,968.40

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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.