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Finding the Fourth Proportional to 621,007.70, 931,511.55 and 451,733.90

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Solution

The fourth proportional to 621,007.70, 931,511.55 and 451,733.90 is: 677,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,007.70 : 931,511.55 = 451,733.90 : x
  2. Step 2: Convert to fraction form
    621,007.70/931,511.55 = 451,733.90/x
  3. Step 3: Cross multiply
    621,007.70x = 931,511.55 × 451,733.90
  4. Step 4: Simplify right side
    621,007.70x = 420,795,345,376.55
  5. Step 5: Solve for x
    x = 420,795,345,376.55/621,007.70
  6. Step 6: Final answer
    x = 677,600.85

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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.