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Finding the Fourth Proportional to 325,776.40, 488,648.40 and 168,020.80

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Solution

The fourth proportional to 325,776.40, 488,648.40 and 168,020.80 is: 252,022.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,776.40 : 488,648.40 = 168,020.80 : x
  2. Step 2: Convert to fraction form
    325,776.40/488,648.40 = 168,020.80/x
  3. Step 3: Cross multiply
    325,776.40x = 488,648.40 × 168,020.80
  4. Step 4: Simplify right side
    325,776.40x = 82,103,095,086.72
  5. Step 5: Solve for x
    x = 82,103,095,086.72/325,776.40
  6. Step 6: Final answer
    x = 252,022.84

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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.