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Finding the Fourth Proportional to 132,019.88, 182,198.95 and 72,415.40

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Solution

The fourth proportional to 132,019.88, 182,198.95 and 72,415.40 is: 99,939.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,019.88 : 182,198.95 = 72,415.40 : x
  2. Step 2: Convert to fraction form
    132,019.88/182,198.95 = 72,415.40/x
  3. Step 3: Cross multiply
    132,019.88x = 182,198.95 × 72,415.40
  4. Step 4: Simplify right side
    132,019.88x = 13,194,008,751.80
  5. Step 5: Solve for x
    x = 13,194,008,751.80/132,019.88
  6. Step 6: Final answer
    x = 99,939.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.