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Finding the Fourth Proportional to 665,983.80, 998,975.70 and 192,684.60

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Solution

The fourth proportional to 665,983.80, 998,975.70 and 192,684.60 is: 289,026.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,983.80 : 998,975.70 = 192,684.60 : x
  2. Step 2: Convert to fraction form
    665,983.80/998,975.70 = 192,684.60/x
  3. Step 3: Cross multiply
    665,983.80x = 998,975.70 × 192,684.60
  4. Step 4: Simplify right side
    665,983.80x = 192,487,233,164.22
  5. Step 5: Solve for x
    x = 192,487,233,164.22/665,983.80
  6. Step 6: Final answer
    x = 289,026.90

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Double scale
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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.