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Finding the Fourth Proportional to 55,570.59, 76,694.72 and 31,691.79

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Solution

The fourth proportional to 55,570.59, 76,694.72 and 31,691.79 is: 43,738.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,570.59 : 76,694.72 = 31,691.79 : x
  2. Step 2: Convert to fraction form
    55,570.59/76,694.72 = 31,691.79/x
  3. Step 3: Cross multiply
    55,570.59x = 76,694.72 × 31,691.79
  4. Step 4: Simplify right side
    55,570.59x = 2,430,592,801.89
  5. Step 5: Solve for x
    x = 2,430,592,801.89/55,570.59
  6. Step 6: Final answer
    x = 43,738.83

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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.