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Finding the Fourth Proportional to 347,212.80, 479,151.36 and 196,310.40

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Solution

The fourth proportional to 347,212.80, 479,151.36 and 196,310.40 is: 270,907.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,212.80 : 479,151.36 = 196,310.40 : x
  2. Step 2: Convert to fraction form
    347,212.80/479,151.36 = 196,310.40/x
  3. Step 3: Cross multiply
    347,212.80x = 479,151.36 × 196,310.40
  4. Step 4: Simplify right side
    347,212.80x = 94,062,395,142.14
  5. Step 5: Solve for x
    x = 94,062,395,142.14/347,212.80
  6. Step 6: Final answer
    x = 270,907.05

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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.