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Finding the Fourth Proportional to 641,367.61, 885,027.01 and 434,214.60

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Solution

The fourth proportional to 641,367.61, 885,027.01 and 434,214.60 is: 599,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,367.61 : 885,027.01 = 434,214.60 : x
  2. Step 2: Convert to fraction form
    641,367.61/885,027.01 = 434,214.60/x
  3. Step 3: Cross multiply
    641,367.61x = 885,027.01 × 434,214.60
  4. Step 4: Simplify right side
    641,367.61x = 384,291,649,136.35
  5. Step 5: Solve for x
    x = 384,291,649,136.35/641,367.61
  6. Step 6: Final answer
    x = 599,175.33

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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.