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Finding the Fourth Proportional to 132,605.80, 182,999.96 and 81,647.93

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Solution

The fourth proportional to 132,605.80, 182,999.96 and 81,647.93 is: 112,676.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,605.80 : 182,999.96 = 81,647.93 : x
  2. Step 2: Convert to fraction form
    132,605.80/182,999.96 = 81,647.93/x
  3. Step 3: Cross multiply
    132,605.80x = 182,999.96 × 81,647.93
  4. Step 4: Simplify right side
    132,605.80x = 14,941,568,585.70
  5. Step 5: Solve for x
    x = 14,941,568,585.70/132,605.80
  6. Step 6: Final answer
    x = 112,676.59

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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.