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Finding the Fourth Proportional to 618,112.10, 928,589.22 and 436,161.58

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Solution

The fourth proportional to 618,112.10, 928,589.22 and 436,161.58 is: 655,245.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,112.10 : 928,589.22 = 436,161.58 : x
  2. Step 2: Convert to fraction form
    618,112.10/928,589.22 = 436,161.58/x
  3. Step 3: Cross multiply
    618,112.10x = 928,589.22 × 436,161.58
  4. Step 4: Simplify right side
    618,112.10x = 405,014,939,044.70
  5. Step 5: Solve for x
    x = 405,014,939,044.70/618,112.10
  6. Step 6: Final answer
    x = 655,245.12

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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.