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Finding the Fourth Proportional to 2,648,408.22, 3,972,648.96 and 755,149.41

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Solution

The fourth proportional to 2,648,408.22, 3,972,648.96 and 755,149.41 is: 1,132,734.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648,408.22 : 3,972,648.96 = 755,149.41 : x
  2. Step 2: Convert to fraction form
    2,648,408.22/3,972,648.96 = 755,149.41/x
  3. Step 3: Cross multiply
    2,648,408.22x = 3,972,648.96 × 755,149.41
  4. Step 4: Simplify right side
    2,648,408.22x = 2,999,943,518,281.11
  5. Step 5: Solve for x
    x = 2,999,943,518,281.11/2,648,408.22
  6. Step 6: Final answer
    x = 1,132,734.56

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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.