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Finding the Fourth Proportional to 157,593.89, 217,475.91 and 85,976.43

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Solution

The fourth proportional to 157,593.89, 217,475.91 and 85,976.43 is: 118,645.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,593.89 : 217,475.91 = 85,976.43 : x
  2. Step 2: Convert to fraction form
    157,593.89/217,475.91 = 85,976.43/x
  3. Step 3: Cross multiply
    157,593.89x = 217,475.91 × 85,976.43
  4. Step 4: Simplify right side
    157,593.89x = 18,697,802,352.80
  5. Step 5: Solve for x
    x = 18,697,802,352.80/157,593.89
  6. Step 6: Final answer
    x = 118,645.48

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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.