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Finding the Fourth Proportional to 359,698.30, 496,383.75 and 198,553.45

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Solution

The fourth proportional to 359,698.30, 496,383.75 and 198,553.45 is: 274,003.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,698.30 : 496,383.75 = 198,553.45 : x
  2. Step 2: Convert to fraction form
    359,698.30/496,383.75 = 198,553.45/x
  3. Step 3: Cross multiply
    359,698.30x = 496,383.75 × 198,553.45
  4. Step 4: Simplify right side
    359,698.30x = 98,558,706,086.44
  5. Step 5: Solve for x
    x = 98,558,706,086.44/359,698.30
  6. Step 6: Final answer
    x = 274,003.81

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1.5x scale

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.