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Finding the Fourth Proportional to 61,744.62, 92,631.57 and 20,191.50

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Solution

The fourth proportional to 61,744.62, 92,631.57 and 20,191.50 is: 30,292.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,744.62 : 92,631.57 = 20,191.50 : x
  2. Step 2: Convert to fraction form
    61,744.62/92,631.57 = 20,191.50/x
  3. Step 3: Cross multiply
    61,744.62x = 92,631.57 × 20,191.50
  4. Step 4: Simplify right side
    61,744.62x = 1,870,370,345.66
  5. Step 5: Solve for x
    x = 1,870,370,345.66/61,744.62
  6. Step 6: Final answer
    x = 30,292.04

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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.