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Finding the Fourth Proportional to 55,785.22, 76,895.13 and 54,679.30

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Solution

The fourth proportional to 55,785.22, 76,895.13 and 54,679.30 is: 75,370.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,785.22 : 76,895.13 = 54,679.30 : x
  2. Step 2: Convert to fraction form
    55,785.22/76,895.13 = 54,679.30/x
  3. Step 3: Cross multiply
    55,785.22x = 76,895.13 × 54,679.30
  4. Step 4: Simplify right side
    55,785.22x = 4,204,571,881.81
  5. Step 5: Solve for x
    x = 4,204,571,881.81/55,785.22
  6. Step 6: Final answer
    x = 75,370.71

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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.