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Finding the Fourth Proportional to 66,517.41, 99,792.68 and 19,769.01

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Solution

The fourth proportional to 66,517.41, 99,792.68 and 19,769.01 is: 29,658.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,517.41 : 99,792.68 = 19,769.01 : x
  2. Step 2: Convert to fraction form
    66,517.41/99,792.68 = 19,769.01/x
  3. Step 3: Cross multiply
    66,517.41x = 99,792.68 × 19,769.01
  4. Step 4: Simplify right side
    66,517.41x = 1,972,802,390.00
  5. Step 5: Solve for x
    x = 1,972,802,390.00/66,517.41
  6. Step 6: Final answer
    x = 29,658.44

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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.