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Finding the Fourth Proportional to 6,486,676.56, 8,950,128.56 and 3,872,671.90

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Solution

The fourth proportional to 6,486,676.56, 8,950,128.56 and 3,872,671.90 is: 5,343,400.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486,676.56 : 8,950,128.56 = 3,872,671.90 : x
  2. Step 2: Convert to fraction form
    6,486,676.56/8,950,128.56 = 3,872,671.90/x
  3. Step 3: Cross multiply
    6,486,676.56x = 8,950,128.56 × 3,872,671.90
  4. Step 4: Simplify right side
    6,486,676.56x = 34,660,911,375,699.46
  5. Step 5: Solve for x
    x = 34,660,911,375,699.46/6,486,676.56
  6. Step 6: Final answer
    x = 5,343,400.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.