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Finding the Fourth Proportional to 62,921.70, 94,163.85 and 57,672.90

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Solution

The fourth proportional to 62,921.70, 94,163.85 and 57,672.90 is: 86,308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,921.70 : 94,163.85 = 57,672.90 : x
  2. Step 2: Convert to fraction form
    62,921.70/94,163.85 = 57,672.90/x
  3. Step 3: Cross multiply
    62,921.70x = 94,163.85 × 57,672.90
  4. Step 4: Simplify right side
    62,921.70x = 5,430,702,304.67
  5. Step 5: Solve for x
    x = 5,430,702,304.67/62,921.70
  6. Step 6: Final answer
    x = 86,308.89

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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.