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Finding the Fourth Proportional to 132,609.68, 183,005.31 and 81,651.82

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Solution

The fourth proportional to 132,609.68, 183,005.31 and 81,651.82 is: 112,681.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,609.68 : 183,005.31 = 81,651.82 : x
  2. Step 2: Convert to fraction form
    132,609.68/183,005.31 = 81,651.82/x
  3. Step 3: Cross multiply
    132,609.68x = 183,005.31 × 81,651.82
  4. Step 4: Simplify right side
    132,609.68x = 14,942,715,409.94
  5. Step 5: Solve for x
    x = 14,942,715,409.94/132,609.68
  6. Step 6: Final answer
    x = 112,681.94

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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.