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Finding the Fourth Proportional to 325,811.40, 488,717.10 and 303,668.03

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Solution

The fourth proportional to 325,811.40, 488,717.10 and 303,668.03 is: 455,502.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,811.40 : 488,717.10 = 303,668.03 : x
  2. Step 2: Convert to fraction form
    325,811.40/488,717.10 = 303,668.03/x
  3. Step 3: Cross multiply
    325,811.40x = 488,717.10 × 303,668.03
  4. Step 4: Simplify right side
    325,811.40x = 148,407,756,540.73
  5. Step 5: Solve for x
    x = 148,407,756,540.73/325,811.40
  6. Step 6: Final answer
    x = 455,502.04

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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.