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Finding the Fourth Proportional to 320,861.82, 442,813.90 and 183,043.78

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Solution

The fourth proportional to 320,861.82, 442,813.90 and 183,043.78 is: 252,614.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,861.82 : 442,813.90 = 183,043.78 : x
  2. Step 2: Convert to fraction form
    320,861.82/442,813.90 = 183,043.78/x
  3. Step 3: Cross multiply
    320,861.82x = 442,813.90 × 183,043.78
  4. Step 4: Simplify right side
    320,861.82x = 81,054,330,092.54
  5. Step 5: Solve for x
    x = 81,054,330,092.54/320,861.82
  6. Step 6: Final answer
    x = 252,614.44

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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.