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Finding the Fourth Proportional to 85,161.81, 127,808.33 and 68,562.51

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Solution

The fourth proportional to 85,161.81, 127,808.33 and 68,562.51 is: 102,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,161.81 : 127,808.33 = 68,562.51 : x
  2. Step 2: Convert to fraction form
    85,161.81/127,808.33 = 68,562.51/x
  3. Step 3: Cross multiply
    85,161.81x = 127,808.33 × 68,562.51
  4. Step 4: Simplify right side
    85,161.81x = 8,762,859,560.90
  5. Step 5: Solve for x
    x = 8,762,859,560.90/85,161.81
  6. Step 6: Final answer
    x = 102,896.59

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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.