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Finding the Fourth Proportional to 58,843.87, 81,202.30 and 31,985.82

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Solution

The fourth proportional to 58,843.87, 81,202.30 and 31,985.82 is: 44,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,843.87 : 81,202.30 = 31,985.82 : x
  2. Step 2: Convert to fraction form
    58,843.87/81,202.30 = 31,985.82/x
  3. Step 3: Cross multiply
    58,843.87x = 81,202.30 × 31,985.82
  4. Step 4: Simplify right side
    58,843.87x = 2,597,322,071.42
  5. Step 5: Solve for x
    x = 2,597,322,071.42/58,843.87
  6. Step 6: Final answer
    x = 44,139.21

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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.