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Finding the Fourth Proportional to 115,998.43, 173,998.67 and 45,877.74

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Solution

The fourth proportional to 115,998.43, 173,998.67 and 45,877.74 is: 68,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,998.43 : 173,998.67 = 45,877.74 : x
  2. Step 2: Convert to fraction form
    115,998.43/173,998.67 = 45,877.74/x
  3. Step 3: Cross multiply
    115,998.43x = 173,998.67 × 45,877.74
  4. Step 4: Simplify right side
    115,998.43x = 7,982,665,742.61
  5. Step 5: Solve for x
    x = 7,982,665,742.61/115,998.43
  6. Step 6: Final answer
    x = 68,817.02

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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.