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Finding the Fourth Proportional to 641,366.46, 885,025.41 and 434,213.46

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Solution

The fourth proportional to 641,366.46, 885,025.41 and 434,213.46 is: 599,173.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,366.46 : 885,025.41 = 434,213.46 : x
  2. Step 2: Convert to fraction form
    641,366.46/885,025.41 = 434,213.46/x
  3. Step 3: Cross multiply
    641,366.46x = 885,025.41 × 434,213.46
  4. Step 4: Simplify right side
    641,366.46x = 384,289,945,464.02
  5. Step 5: Solve for x
    x = 384,289,945,464.02/641,366.46
  6. Step 6: Final answer
    x = 599,173.75

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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.