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Finding the Fourth Proportional to 67,510.97, 101,268.08 and 20,764.25

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Solution

The fourth proportional to 67,510.97, 101,268.08 and 20,764.25 is: 31,146.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,510.97 : 101,268.08 = 20,764.25 : x
  2. Step 2: Convert to fraction form
    67,510.97/101,268.08 = 20,764.25/x
  3. Step 3: Cross multiply
    67,510.97x = 101,268.08 × 20,764.25
  4. Step 4: Simplify right side
    67,510.97x = 2,102,755,626.32
  5. Step 5: Solve for x
    x = 2,102,755,626.32/67,510.97
  6. Step 6: Final answer
    x = 31,146.87

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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.