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Finding the Fourth Proportional to 109,990.53, 151,786.17 and 59,689.53

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Solution

The fourth proportional to 109,990.53, 151,786.17 and 59,689.53 is: 82,371.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,990.53 : 151,786.17 = 59,689.53 : x
  2. Step 2: Convert to fraction form
    109,990.53/151,786.17 = 59,689.53/x
  3. Step 3: Cross multiply
    109,990.53x = 151,786.17 × 59,689.53
  4. Step 4: Simplify right side
    109,990.53x = 9,060,045,147.80
  5. Step 5: Solve for x
    x = 9,060,045,147.80/109,990.53
  6. Step 6: Final answer
    x = 82,371.14

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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.