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Finding the Fourth Proportional to 123,563.64, 170,517.63 and 66,975.03

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Solution

The fourth proportional to 123,563.64, 170,517.63 and 66,975.03 is: 92,425.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,563.64 : 170,517.63 = 66,975.03 : x
  2. Step 2: Convert to fraction form
    123,563.64/170,517.63 = 66,975.03/x
  3. Step 3: Cross multiply
    123,563.64x = 170,517.63 × 66,975.03
  4. Step 4: Simplify right side
    123,563.64x = 11,420,423,384.78
  5. Step 5: Solve for x
    x = 11,420,423,384.78/123,563.64
  6. Step 6: Final answer
    x = 92,425.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.