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Finding the Fourth Proportional to 641,367.90, 885,027.42 and 434,214.90

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Solution

The fourth proportional to 641,367.90, 885,027.42 and 434,214.90 is: 599,175.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,367.90 : 885,027.42 = 434,214.90 : x
  2. Step 2: Convert to fraction form
    641,367.90/885,027.42 = 434,214.90/x
  3. Step 3: Cross multiply
    641,367.90x = 885,027.42 × 434,214.90
  4. Step 4: Simplify right side
    641,367.90x = 384,292,092,672.56
  5. Step 5: Solve for x
    x = 384,292,092,672.56/641,367.90
  6. Step 6: Final answer
    x = 599,175.75

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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.