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Finding the Fourth Proportional to 680,776.54, 939,597.60 and 394,296.54

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Solution

The fourth proportional to 680,776.54, 939,597.60 and 394,296.54 is: 544,202.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,776.54 : 939,597.60 = 394,296.54 : x
  2. Step 2: Convert to fraction form
    680,776.54/939,597.60 = 394,296.54/x
  3. Step 3: Cross multiply
    680,776.54x = 939,597.60 × 394,296.54
  4. Step 4: Simplify right side
    680,776.54x = 370,480,082,672.30
  5. Step 5: Solve for x
    x = 370,480,082,672.30/680,776.54
  6. Step 6: Final answer
    x = 544,202.19

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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.