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Finding the Fourth Proportional to 57,073.46, 78,836.61 and 43,808.61

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Solution

The fourth proportional to 57,073.46, 78,836.61 and 43,808.61 is: 60,513.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,073.46 : 78,836.61 = 43,808.61 : x
  2. Step 2: Convert to fraction form
    57,073.46/78,836.61 = 43,808.61/x
  3. Step 3: Cross multiply
    57,073.46x = 78,836.61 × 43,808.61
  4. Step 4: Simplify right side
    57,073.46x = 3,453,722,301.21
  5. Step 5: Solve for x
    x = 3,453,722,301.21/57,073.46
  6. Step 6: Final answer
    x = 60,513.64

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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.