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Finding the Fourth Proportional to 325,730.40, 488,579.40 and 167,974.80

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Solution

The fourth proportional to 325,730.40, 488,579.40 and 167,974.80 is: 251,953.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,730.40 : 488,579.40 = 167,974.80 : x
  2. Step 2: Convert to fraction form
    325,730.40/488,579.40 = 167,974.80/x
  3. Step 3: Cross multiply
    325,730.40x = 488,579.40 × 167,974.80
  4. Step 4: Simplify right side
    325,730.40x = 82,069,026,999.12
  5. Step 5: Solve for x
    x = 82,069,026,999.12/325,730.40
  6. Step 6: Final answer
    x = 251,953.85

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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.