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Finding the Fourth Proportional to 605,414.05, 835,507.30 and 347,289.11

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Solution

The fourth proportional to 605,414.05, 835,507.30 and 347,289.11 is: 479,279.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,414.05 : 835,507.30 = 347,289.11 : x
  2. Step 2: Convert to fraction form
    605,414.05/835,507.30 = 347,289.11/x
  3. Step 3: Cross multiply
    605,414.05x = 835,507.30 × 347,289.11
  4. Step 4: Simplify right side
    605,414.05x = 290,162,583,934.94
  5. Step 5: Solve for x
    x = 290,162,583,934.94/605,414.05
  6. Step 6: Final answer
    x = 479,279.56

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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.