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Finding the Fourth Proportional to 101,511.72, 140,053.97 and 59,062.05

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Solution

The fourth proportional to 101,511.72, 140,053.97 and 59,062.05 is: 81,486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,511.72 : 140,053.97 = 59,062.05 : x
  2. Step 2: Convert to fraction form
    101,511.72/140,053.97 = 59,062.05/x
  3. Step 3: Cross multiply
    101,511.72x = 140,053.97 × 59,062.05
  4. Step 4: Simplify right side
    101,511.72x = 8,271,873,583.26
  5. Step 5: Solve for x
    x = 8,271,873,583.26/101,511.72
  6. Step 6: Final answer
    x = 81,486.89

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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.