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Finding the Fourth Proportional to 57,551.30, 86,212.13 and 45,725.10

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Solution

The fourth proportional to 57,551.30, 86,212.13 and 45,725.10 is: 68,496.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,551.30 : 86,212.13 = 45,725.10 : x
  2. Step 2: Convert to fraction form
    57,551.30/86,212.13 = 45,725.10/x
  3. Step 3: Cross multiply
    57,551.30x = 86,212.13 × 45,725.10
  4. Step 4: Simplify right side
    57,551.30x = 3,942,058,265.46
  5. Step 5: Solve for x
    x = 3,942,058,265.46/57,551.30
  6. Step 6: Final answer
    x = 68,496.42

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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.