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Finding the Fourth Proportional to 352,052.10, 528,078.15 and 115,418.70

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Solution

The fourth proportional to 352,052.10, 528,078.15 and 115,418.70 is: 173,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,052.10 : 528,078.15 = 115,418.70 : x
  2. Step 2: Convert to fraction form
    352,052.10/528,078.15 = 115,418.70/x
  3. Step 3: Cross multiply
    352,052.10x = 528,078.15 × 115,418.70
  4. Step 4: Simplify right side
    352,052.10x = 60,950,093,571.41
  5. Step 5: Solve for x
    x = 60,950,093,571.41/352,052.10
  6. Step 6: Final answer
    x = 173,128.05

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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.