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Finding the Fourth Proportional to 325,815.60, 488,577.60 and 126,069.60

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Solution

The fourth proportional to 325,815.60, 488,577.60 and 126,069.60 is: 189,047.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,815.60 : 488,577.60 = 126,069.60 : x
  2. Step 2: Convert to fraction form
    325,815.60/488,577.60 = 126,069.60/x
  3. Step 3: Cross multiply
    325,815.60x = 488,577.60 × 126,069.60
  4. Step 4: Simplify right side
    325,815.60x = 61,594,782,600.96
  5. Step 5: Solve for x
    x = 61,594,782,600.96/325,815.60
  6. Step 6: Final answer
    x = 189,047.98

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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.