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Finding the Fourth Proportional to 325,550.40, 488,471.40 and 115,339.20

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Solution

The fourth proportional to 325,550.40, 488,471.40 and 115,339.20 is: 173,060.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,550.40 : 488,471.40 = 115,339.20 : x
  2. Step 2: Convert to fraction form
    325,550.40/488,471.40 = 115,339.20/x
  3. Step 3: Cross multiply
    325,550.40x = 488,471.40 × 115,339.20
  4. Step 4: Simplify right side
    325,550.40x = 56,339,900,498.88
  5. Step 5: Solve for x
    x = 56,339,900,498.88/325,550.40
  6. Step 6: Final answer
    x = 173,060.46

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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.