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Finding the Fourth Proportional to 578,858.40, 868,287.60 and 263,930.40

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Solution

The fourth proportional to 578,858.40, 868,287.60 and 263,930.40 is: 395,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,858.40 : 868,287.60 = 263,930.40 : x
  2. Step 2: Convert to fraction form
    578,858.40/868,287.60 = 263,930.40/x
  3. Step 3: Cross multiply
    578,858.40x = 868,287.60 × 263,930.40
  4. Step 4: Simplify right side
    578,858.40x = 229,167,493,583.04
  5. Step 5: Solve for x
    x = 229,167,493,583.04/578,858.40
  6. Step 6: Final answer
    x = 395,895.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.