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Finding the Fourth Proportional to 325,815.40, 488,698.80 and 136,226.80

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Solution

The fourth proportional to 325,815.40, 488,698.80 and 136,226.80 is: 204,330.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,815.40 : 488,698.80 = 136,226.80 : x
  2. Step 2: Convert to fraction form
    325,815.40/488,698.80 = 136,226.80/x
  3. Step 3: Cross multiply
    325,815.40x = 488,698.80 × 136,226.80
  4. Step 4: Simplify right side
    325,815.40x = 66,573,873,687.84
  5. Step 5: Solve for x
    x = 66,573,873,687.84/325,815.40
  6. Step 6: Final answer
    x = 204,330.04

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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.