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Finding the Fourth Proportional to 539,631.80, 809,447.70 and 451,714.40

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Solution

The fourth proportional to 539,631.80, 809,447.70 and 451,714.40 is: 677,571.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,631.80 : 809,447.70 = 451,714.40 : x
  2. Step 2: Convert to fraction form
    539,631.80/809,447.70 = 451,714.40/x
  3. Step 3: Cross multiply
    539,631.80x = 809,447.70 × 451,714.40
  4. Step 4: Simplify right side
    539,631.80x = 365,639,182,136.88
  5. Step 5: Solve for x
    x = 365,639,182,136.88/539,631.80
  6. Step 6: Final answer
    x = 677,571.60

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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.