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Finding the Fourth Proportional to 325,354.38, 448,964.53 and 198,015.90

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Solution

The fourth proportional to 325,354.38, 448,964.53 and 198,015.90 is: 273,247.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,354.38 : 448,964.53 = 198,015.90 : x
  2. Step 2: Convert to fraction form
    325,354.38/448,964.53 = 198,015.90/x
  3. Step 3: Cross multiply
    325,354.38x = 448,964.53 × 198,015.90
  4. Step 4: Simplify right side
    325,354.38x = 88,902,115,476.03
  5. Step 5: Solve for x
    x = 88,902,115,476.03/325,354.38
  6. Step 6: Final answer
    x = 273,247.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.