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Finding the Fourth Proportional to 211,078.03, 316,676.22 and 84,806.93

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Solution

The fourth proportional to 211,078.03, 316,676.22 and 84,806.93 is: 127,234.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,078.03 : 316,676.22 = 84,806.93 : x
  2. Step 2: Convert to fraction form
    211,078.03/316,676.22 = 84,806.93/x
  3. Step 3: Cross multiply
    211,078.03x = 316,676.22 × 84,806.93
  4. Step 4: Simplify right side
    211,078.03x = 26,856,339,211.43
  5. Step 5: Solve for x
    x = 26,856,339,211.43/211,078.03
  6. Step 6: Final answer
    x = 127,234.18

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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.