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Finding the Fourth Proportional to 685,656.40, 945,891.72 and 444,016.78

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Solution

The fourth proportional to 685,656.40, 945,891.72 and 444,016.78 is: 612,539.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,656.40 : 945,891.72 = 444,016.78 : x
  2. Step 2: Convert to fraction form
    685,656.40/945,891.72 = 444,016.78/x
  3. Step 3: Cross multiply
    685,656.40x = 945,891.72 × 444,016.78
  4. Step 4: Simplify right side
    685,656.40x = 419,991,795,743.06
  5. Step 5: Solve for x
    x = 419,991,795,743.06/685,656.40
  6. Step 6: Final answer
    x = 612,539.74

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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.