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Finding the Fourth Proportional to 552,638.80, 828,958.20 and 412,670.80

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Solution

The fourth proportional to 552,638.80, 828,958.20 and 412,670.80 is: 619,006.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,638.80 : 828,958.20 = 412,670.80 : x
  2. Step 2: Convert to fraction form
    552,638.80/828,958.20 = 412,670.80/x
  3. Step 3: Cross multiply
    552,638.80x = 828,958.20 × 412,670.80
  4. Step 4: Simplify right side
    552,638.80x = 342,086,843,560.56
  5. Step 5: Solve for x
    x = 342,086,843,560.56/552,638.80
  6. Step 6: Final answer
    x = 619,006.20

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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.