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Finding the Fourth Proportional to 57,259.70, 79,016.91 and 31,765.94

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Solution

The fourth proportional to 57,259.70, 79,016.91 and 31,765.94 is: 43,836.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,259.70 : 79,016.91 = 31,765.94 : x
  2. Step 2: Convert to fraction form
    57,259.70/79,016.91 = 31,765.94/x
  3. Step 3: Cross multiply
    57,259.70x = 79,016.91 × 31,765.94
  4. Step 4: Simplify right side
    57,259.70x = 2,510,046,026.96
  5. Step 5: Solve for x
    x = 2,510,046,026.96/57,259.70
  6. Step 6: Final answer
    x = 43,836.18

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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.