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Finding the Fourth Proportional to 67,362.31, 100,977.44 and 57,389.59

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Solution

The fourth proportional to 67,362.31, 100,977.44 and 57,389.59 is: 86,028.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,362.31 : 100,977.44 = 57,389.59 : x
  2. Step 2: Convert to fraction form
    67,362.31/100,977.44 = 57,389.59/x
  3. Step 3: Cross multiply
    67,362.31x = 100,977.44 × 57,389.59
  4. Step 4: Simplify right side
    67,362.31x = 5,795,053,375.96
  5. Step 5: Solve for x
    x = 5,795,053,375.96/67,362.31
  6. Step 6: Final answer
    x = 86,028.13

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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.