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Finding the Fourth Proportional to 61,086.32, 91,643.84 and 18,964.25

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Solution

The fourth proportional to 61,086.32, 91,643.84 and 18,964.25 is: 28,450.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,086.32 : 91,643.84 = 18,964.25 : x
  2. Step 2: Convert to fraction form
    61,086.32/91,643.84 = 18,964.25/x
  3. Step 3: Cross multiply
    61,086.32x = 91,643.84 × 18,964.25
  4. Step 4: Simplify right side
    61,086.32x = 1,737,956,139.68
  5. Step 5: Solve for x
    x = 1,737,956,139.68/61,086.32
  6. Step 6: Final answer
    x = 28,450.83

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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.