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Finding the Fourth Proportional to 325,626.40, 488,439.60 and 245,792.80

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Solution

The fourth proportional to 325,626.40, 488,439.60 and 245,792.80 is: 368,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,626.40 : 488,439.60 = 245,792.80 : x
  2. Step 2: Convert to fraction form
    325,626.40/488,439.60 = 245,792.80/x
  3. Step 3: Cross multiply
    325,626.40x = 488,439.60 × 245,792.80
  4. Step 4: Simplify right side
    325,626.40x = 120,054,936,914.88
  5. Step 5: Solve for x
    x = 120,054,936,914.88/325,626.40
  6. Step 6: Final answer
    x = 368,689.20

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1.5x scale

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.