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Finding the Fourth Proportional to 325,986.30, 488,979.45 and 273,498.30

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Solution

The fourth proportional to 325,986.30, 488,979.45 and 273,498.30 is: 410,247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,986.30 : 488,979.45 = 273,498.30 : x
  2. Step 2: Convert to fraction form
    325,986.30/488,979.45 = 273,498.30/x
  3. Step 3: Cross multiply
    325,986.30x = 488,979.45 × 273,498.30
  4. Step 4: Simplify right side
    325,986.30x = 133,735,048,309.94
  5. Step 5: Solve for x
    x = 133,735,048,309.94/325,986.30
  6. Step 6: Final answer
    x = 410,247.45

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Double scale
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Similar ratio
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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.