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Finding the Fourth Proportional to 119,171.88, 178,755.08 and 59,991.66

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Solution

The fourth proportional to 119,171.88, 178,755.08 and 59,991.66 is: 89,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,171.88 : 178,755.08 = 59,991.66 : x
  2. Step 2: Convert to fraction form
    119,171.88/178,755.08 = 59,991.66/x
  3. Step 3: Cross multiply
    119,171.88x = 178,755.08 × 59,991.66
  4. Step 4: Simplify right side
    119,171.88x = 10,723,813,682.67
  5. Step 5: Solve for x
    x = 10,723,813,682.67/119,171.88
  6. Step 6: Final answer
    x = 89,986.11

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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.