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Finding the Fourth Proportional to 641,179.83, 884,854.22 and 354,694.98

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Solution

The fourth proportional to 641,179.83, 884,854.22 and 354,694.98 is: 489,493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,179.83 : 884,854.22 = 354,694.98 : x
  2. Step 2: Convert to fraction form
    641,179.83/884,854.22 = 354,694.98/x
  3. Step 3: Cross multiply
    641,179.83x = 884,854.22 × 354,694.98
  4. Step 4: Simplify right side
    641,179.83x = 313,853,348,092.34
  5. Step 5: Solve for x
    x = 313,853,348,092.34/641,179.83
  6. Step 6: Final answer
    x = 489,493.48

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Half scale
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Double scale
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Similar ratio
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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.