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Finding the Fourth Proportional to 58,704.79, 81,007.25 and 33,213.48

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Solution

The fourth proportional to 58,704.79, 81,007.25 and 33,213.48 is: 45,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,704.79 : 81,007.25 = 33,213.48 : x
  2. Step 2: Convert to fraction form
    58,704.79/81,007.25 = 33,213.48/x
  3. Step 3: Cross multiply
    58,704.79x = 81,007.25 × 33,213.48
  4. Step 4: Simplify right side
    58,704.79x = 2,690,532,677.73
  5. Step 5: Solve for x
    x = 2,690,532,677.73/58,704.79
  6. Step 6: Final answer
    x = 45,831.57

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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.