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Finding the Fourth Proportional to 57,468.56, 79,307.58 and 31,976.96

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Solution

The fourth proportional to 57,468.56, 79,307.58 and 31,976.96 is: 44,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,468.56 : 79,307.58 = 31,976.96 : x
  2. Step 2: Convert to fraction form
    57,468.56/79,307.58 = 31,976.96/x
  3. Step 3: Cross multiply
    57,468.56x = 79,307.58 × 31,976.96
  4. Step 4: Simplify right side
    57,468.56x = 2,536,015,313.36
  5. Step 5: Solve for x
    x = 2,536,015,313.36/57,468.56
  6. Step 6: Final answer
    x = 44,128.74

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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.