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Finding the Fourth Proportional to 641,366.61, 885,025.64 and 434,213.60

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Solution

The fourth proportional to 641,366.61, 885,025.64 and 434,213.60 is: 599,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,366.61 : 885,025.64 = 434,213.60 : x
  2. Step 2: Convert to fraction form
    641,366.61/885,025.64 = 434,213.60/x
  3. Step 3: Cross multiply
    641,366.61x = 885,025.64 × 434,213.60
  4. Step 4: Simplify right side
    641,366.61x = 384,290,162,640.51
  5. Step 5: Solve for x
    x = 384,290,162,640.51/641,366.61
  6. Step 6: Final answer
    x = 599,173.95

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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.