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Finding the Fourth Proportional to 58,813.89, 81,163.52 and 31,956.63

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Solution

The fourth proportional to 58,813.89, 81,163.52 and 31,956.63 is: 44,100.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,813.89 : 81,163.52 = 31,956.63 : x
  2. Step 2: Convert to fraction form
    58,813.89/81,163.52 = 31,956.63/x
  3. Step 3: Cross multiply
    58,813.89x = 81,163.52 × 31,956.63
  4. Step 4: Simplify right side
    58,813.89x = 2,593,712,418.35
  5. Step 5: Solve for x
    x = 2,593,712,418.35/58,813.89
  6. Step 6: Final answer
    x = 44,100.34

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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.