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Finding the Fourth Proportional to 346,469.80, 519,315.90 and 196,781.80

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Solution

The fourth proportional to 346,469.80, 519,315.90 and 196,781.80 is: 294,951.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,469.80 : 519,315.90 = 196,781.80 : x
  2. Step 2: Convert to fraction form
    346,469.80/519,315.90 = 196,781.80/x
  3. Step 3: Cross multiply
    346,469.80x = 519,315.90 × 196,781.80
  4. Step 4: Simplify right side
    346,469.80x = 102,191,917,570.62
  5. Step 5: Solve for x
    x = 102,191,917,570.62/346,469.80
  6. Step 6: Final answer
    x = 294,951.88

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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.