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Finding the Fourth Proportional to 454,069.20, 681,103.80 and 405,080.40

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Solution

The fourth proportional to 454,069.20, 681,103.80 and 405,080.40 is: 607,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,069.20 : 681,103.80 = 405,080.40 : x
  2. Step 2: Convert to fraction form
    454,069.20/681,103.80 = 405,080.40/x
  3. Step 3: Cross multiply
    454,069.20x = 681,103.80 × 405,080.40
  4. Step 4: Simplify right side
    454,069.20x = 275,901,799,745.52
  5. Step 5: Solve for x
    x = 275,901,799,745.52/454,069.20
  6. Step 6: Final answer
    x = 607,620.60

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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.