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Finding the Fourth Proportional to 65,243.76, 90,042.20 and 36,951.28

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Solution

The fourth proportional to 65,243.76, 90,042.20 and 36,951.28 is: 50,996.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,243.76 : 90,042.20 = 36,951.28 : x
  2. Step 2: Convert to fraction form
    65,243.76/90,042.20 = 36,951.28/x
  3. Step 3: Cross multiply
    65,243.76x = 90,042.20 × 36,951.28
  4. Step 4: Simplify right side
    65,243.76x = 3,327,174,544.02
  5. Step 5: Solve for x
    x = 3,327,174,544.02/65,243.76
  6. Step 6: Final answer
    x = 50,996.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.