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Finding the Fourth Proportional to 83,676.60, 125,514.90 and 31,080.60

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Solution

The fourth proportional to 83,676.60, 125,514.90 and 31,080.60 is: 46,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,676.60 : 125,514.90 = 31,080.60 : x
  2. Step 2: Convert to fraction form
    83,676.60/125,514.90 = 31,080.60/x
  3. Step 3: Cross multiply
    83,676.60x = 125,514.90 × 31,080.60
  4. Step 4: Simplify right side
    83,676.60x = 3,901,078,400.94
  5. Step 5: Solve for x
    x = 3,901,078,400.94/83,676.60
  6. Step 6: Final answer
    x = 46,620.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.