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Finding the Fourth Proportional to 3,979,874.94, 5,972,126.69 and 1,674,199.05

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Solution

The fourth proportional to 3,979,874.94, 5,972,126.69 and 1,674,199.05 is: 2,512,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979,874.94 : 5,972,126.69 = 1,674,199.05 : x
  2. Step 2: Convert to fraction form
    3,979,874.94/5,972,126.69 = 1,674,199.05/x
  3. Step 3: Cross multiply
    3,979,874.94x = 5,972,126.69 × 1,674,199.05
  4. Step 4: Simplify right side
    3,979,874.94x = 9,998,528,822,506.65
  5. Step 5: Solve for x
    x = 9,998,528,822,506.65/3,979,874.94
  6. Step 6: Final answer
    x = 2,512,272.11

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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.