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Finding the Fourth Proportional to 101,900.88, 140,639.94 and 59,459.31

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Solution

The fourth proportional to 101,900.88, 140,639.94 and 59,459.31 is: 82,063.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,900.88 : 140,639.94 = 59,459.31 : x
  2. Step 2: Convert to fraction form
    101,900.88/140,639.94 = 59,459.31/x
  3. Step 3: Cross multiply
    101,900.88x = 140,639.94 × 59,459.31
  4. Step 4: Simplify right side
    101,900.88x = 8,362,353,790.84
  5. Step 5: Solve for x
    x = 8,362,353,790.84/101,900.88
  6. Step 6: Final answer
    x = 82,063.61

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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.