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Finding the Fourth Proportional to 654,243.68, 981,365.16 and 204,999.86

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Solution

The fourth proportional to 654,243.68, 981,365.16 and 204,999.86 is: 307,499.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,243.68 : 981,365.16 = 204,999.86 : x
  2. Step 2: Convert to fraction form
    654,243.68/981,365.16 = 204,999.86/x
  3. Step 3: Cross multiply
    654,243.68x = 981,365.16 × 204,999.86
  4. Step 4: Simplify right side
    654,243.68x = 201,179,715,502.05
  5. Step 5: Solve for x
    x = 201,179,715,502.05/654,243.68
  6. Step 6: Final answer
    x = 307,499.67

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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.