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Finding the Fourth Proportional to 823,781.60, 1,235,672.40 and 800,453.60

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Solution

The fourth proportional to 823,781.60, 1,235,672.40 and 800,453.60 is: 1,200,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,781.60 : 1,235,672.40 = 800,453.60 : x
  2. Step 2: Convert to fraction form
    823,781.60/1,235,672.40 = 800,453.60/x
  3. Step 3: Cross multiply
    823,781.60x = 1,235,672.40 × 800,453.60
  4. Step 4: Simplify right side
    823,781.60x = 989,098,421,000.64
  5. Step 5: Solve for x
    x = 989,098,421,000.64/823,781.60
  6. Step 6: Final answer
    x = 1,200,680.40

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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.