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Finding the Fourth Proportional to 205,638, 283,778.47 and 114,992.92

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Solution

The fourth proportional to 205,638, 283,778.47 and 114,992.92 is: 158,689.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,638 : 283,778.47 = 114,992.92 : x
  2. Step 2: Convert to fraction form
    205,638/283,778.47 = 114,992.92/x
  3. Step 3: Cross multiply
    205,638x = 283,778.47 × 114,992.92
  4. Step 4: Simplify right side
    205,638x = 32,632,514,898.43
  5. Step 5: Solve for x
    x = 32,632,514,898.43/205,638
  6. Step 6: Final answer
    x = 158,689.13

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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.