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Finding the Fourth Proportional to 80,605.80, 111,127.02 and 68,008.68

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Solution

The fourth proportional to 80,605.80, 111,127.02 and 68,008.68 is: 93,760.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,605.80 : 111,127.02 = 68,008.68 : x
  2. Step 2: Convert to fraction form
    80,605.80/111,127.02 = 68,008.68/x
  3. Step 3: Cross multiply
    80,605.80x = 111,127.02 × 68,008.68
  4. Step 4: Simplify right side
    80,605.80x = 7,557,601,942.53
  5. Step 5: Solve for x
    x = 7,557,601,942.53/80,605.80
  6. Step 6: Final answer
    x = 93,760.03

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1.5x scale

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.