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Finding the Fourth Proportional to 886,803.10, 1,330,204.65 and 620,863.90

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Solution

The fourth proportional to 886,803.10, 1,330,204.65 and 620,863.90 is: 931,295.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,803.10 : 1,330,204.65 = 620,863.90 : x
  2. Step 2: Convert to fraction form
    886,803.10/1,330,204.65 = 620,863.90/x
  3. Step 3: Cross multiply
    886,803.10x = 1,330,204.65 × 620,863.90
  4. Step 4: Simplify right side
    886,803.10x = 825,876,046,797.14
  5. Step 5: Solve for x
    x = 825,876,046,797.14/886,803.10
  6. Step 6: Final answer
    x = 931,295.85

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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.