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Finding the Fourth Proportional to 115,521.66, 173,207.77 and 75,958.83

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Solution

The fourth proportional to 115,521.66, 173,207.77 and 75,958.83 is: 113,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,521.66 : 173,207.77 = 75,958.83 : x
  2. Step 2: Convert to fraction form
    115,521.66/173,207.77 = 75,958.83/x
  3. Step 3: Cross multiply
    115,521.66x = 173,207.77 × 75,958.83
  4. Step 4: Simplify right side
    115,521.66x = 13,156,659,366.21
  5. Step 5: Solve for x
    x = 13,156,659,366.21/115,521.66
  6. Step 6: Final answer
    x = 113,889.11

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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.