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Finding the Fourth Proportional to 665,633.70, 998,450.55 and 192,366.90

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Solution

The fourth proportional to 665,633.70, 998,450.55 and 192,366.90 is: 288,550.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,633.70 : 998,450.55 = 192,366.90 : x
  2. Step 2: Convert to fraction form
    665,633.70/998,450.55 = 192,366.90/x
  3. Step 3: Cross multiply
    665,633.70x = 998,450.55 × 192,366.90
  4. Step 4: Simplify right side
    665,633.70x = 192,068,837,106.80
  5. Step 5: Solve for x
    x = 192,068,837,106.80/665,633.70
  6. Step 6: Final answer
    x = 288,550.35

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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.