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Finding the Fourth Proportional to 73,036.38, 100,790.21 and 39,502.38

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Solution

The fourth proportional to 73,036.38, 100,790.21 and 39,502.38 is: 54,513.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,036.38 : 100,790.21 = 39,502.38 : x
  2. Step 2: Convert to fraction form
    73,036.38/100,790.21 = 39,502.38/x
  3. Step 3: Cross multiply
    73,036.38x = 100,790.21 × 39,502.38
  4. Step 4: Simplify right side
    73,036.38x = 3,981,453,175.70
  5. Step 5: Solve for x
    x = 3,981,453,175.70/73,036.38
  6. Step 6: Final answer
    x = 54,513.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.