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Finding the Fourth Proportional to 85,092.72, 127,622.60 and 32,489.70

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Solution

The fourth proportional to 85,092.72, 127,622.60 and 32,489.70 is: 48,728.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,092.72 : 127,622.60 = 32,489.70 : x
  2. Step 2: Convert to fraction form
    85,092.72/127,622.60 = 32,489.70/x
  3. Step 3: Cross multiply
    85,092.72x = 127,622.60 × 32,489.70
  4. Step 4: Simplify right side
    85,092.72x = 4,146,419,430.33
  5. Step 5: Solve for x
    x = 4,146,419,430.33/85,092.72
  6. Step 6: Final answer
    x = 48,728.25

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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.