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Finding the Fourth Proportional to 47,956.88, 71,945.70 and 18,374.72

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Solution

The fourth proportional to 47,956.88, 71,945.70 and 18,374.72 is: 27,566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,956.88 : 71,945.70 = 18,374.72 : x
  2. Step 2: Convert to fraction form
    47,956.88/71,945.70 = 18,374.72/x
  3. Step 3: Cross multiply
    47,956.88x = 71,945.70 × 18,374.72
  4. Step 4: Simplify right side
    47,956.88x = 1,321,981,732.98
  5. Step 5: Solve for x
    x = 1,321,981,732.98/47,956.88
  6. Step 6: Final answer
    x = 27,566.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.