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Finding the Fourth Proportional to 409,091.36, 613,672.51 and 124,845.91

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Solution

The fourth proportional to 409,091.36, 613,672.51 and 124,845.91 is: 187,279.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,091.36 : 613,672.51 = 124,845.91 : x
  2. Step 2: Convert to fraction form
    409,091.36/613,672.51 = 124,845.91/x
  3. Step 3: Cross multiply
    409,091.36x = 613,672.51 × 124,845.91
  4. Step 4: Simplify right side
    409,091.36x = 76,614,502,952.93
  5. Step 5: Solve for x
    x = 76,614,502,952.93/409,091.36
  6. Step 6: Final answer
    x = 187,279.69

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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.