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Finding the Fourth Proportional to 66,527.50, 99,770.50 and 22,143.88

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Solution

The fourth proportional to 66,527.50, 99,770.50 and 22,143.88 is: 33,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,527.50 : 99,770.50 = 22,143.88 : x
  2. Step 2: Convert to fraction form
    66,527.50/99,770.50 = 22,143.88/x
  3. Step 3: Cross multiply
    66,527.50x = 99,770.50 × 22,143.88
  4. Step 4: Simplify right side
    66,527.50x = 2,209,305,369.97
  5. Step 5: Solve for x
    x = 2,209,305,369.97/66,527.50
  6. Step 6: Final answer
    x = 33,208.90

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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.