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Finding the Fourth Proportional to 61,076.97, 91,611.11 and 18,956.03

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Solution

The fourth proportional to 61,076.97, 91,611.11 and 18,956.03 is: 28,432.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,076.97 : 91,611.11 = 18,956.03 : x
  2. Step 2: Convert to fraction form
    61,076.97/91,611.11 = 18,956.03/x
  3. Step 3: Cross multiply
    61,076.97x = 91,611.11 × 18,956.03
  4. Step 4: Simplify right side
    61,076.97x = 1,736,582,538.83
  5. Step 5: Solve for x
    x = 1,736,582,538.83/61,076.97
  6. Step 6: Final answer
    x = 28,432.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.