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Finding the Third Proportional to 57,661.50 and 125,421

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Solution

The third proportional to 57,661.50 and 125,421 is: 272,806.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,661.50 : 125,421 = 125,421 : x
  2. Step 2: Convert to fraction form
    57,661.50/125,421 = 125,421/x
  3. Step 3: Cross multiply
    57,661.50x = 125,421 × 125,421
  4. Step 4: Simplify right side
    57,661.50x = 15,730,427,241
  5. Step 5: Solve for x
    x = 15,730,427,241/57,661.50
  6. Step 6: Final answer
    x = 272,806.42

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.