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Finding the Fourth Proportional to 67,580.31, 101,462.40 and 38,018.95

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Solution

The fourth proportional to 67,580.31, 101,462.40 and 38,018.95 is: 57,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,580.31 : 101,462.40 = 38,018.95 : x
  2. Step 2: Convert to fraction form
    67,580.31/101,462.40 = 38,018.95/x
  3. Step 3: Cross multiply
    67,580.31x = 101,462.40 × 38,018.95
  4. Step 4: Simplify right side
    67,580.31x = 3,857,493,912.48
  5. Step 5: Solve for x
    x = 3,857,493,912.48/67,580.31
  6. Step 6: Final answer
    x = 57,080.15

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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.