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Finding the Fourth Proportional to 492,850.04, 680,403.85 and 320,917.82

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Solution

The fourth proportional to 492,850.04, 680,403.85 and 320,917.82 is: 443,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,850.04 : 680,403.85 = 320,917.82 : x
  2. Step 2: Convert to fraction form
    492,850.04/680,403.85 = 320,917.82/x
  3. Step 3: Cross multiply
    492,850.04x = 680,403.85 × 320,917.82
  4. Step 4: Simplify right side
    492,850.04x = 218,353,716,057.29
  5. Step 5: Solve for x
    x = 218,353,716,057.29/492,850.04
  6. Step 6: Final answer
    x = 443,042.91

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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.