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Finding the Fourth Proportional to 325,856.80, 488,785.20 and 115,467.40

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Solution

The fourth proportional to 325,856.80, 488,785.20 and 115,467.40 is: 173,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,856.80 : 488,785.20 = 115,467.40 : x
  2. Step 2: Convert to fraction form
    325,856.80/488,785.20 = 115,467.40/x
  3. Step 3: Cross multiply
    325,856.80x = 488,785.20 × 115,467.40
  4. Step 4: Simplify right side
    325,856.80x = 56,438,756,202.48
  5. Step 5: Solve for x
    x = 56,438,756,202.48/325,856.80
  6. Step 6: Final answer
    x = 173,201.10

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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.