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Finding the Fourth Proportional to 838,074.84, 1,256,408.10 and 679,911

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Solution

The fourth proportional to 838,074.84, 1,256,408.10 and 679,911 is: 1,019,295.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,074.84 : 1,256,408.10 = 679,911 : x
  2. Step 2: Convert to fraction form
    838,074.84/1,256,408.10 = 679,911/x
  3. Step 3: Cross multiply
    838,074.84x = 1,256,408.10 × 679,911
  4. Step 4: Simplify right side
    838,074.84x = 854,245,687,679.10
  5. Step 5: Solve for x
    x = 854,245,687,679.10/838,074.84
  6. Step 6: Final answer
    x = 1,019,295.23

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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.