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Finding the Fourth Proportional to 81,889.72, 113,006.48 and 46,079.72

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Solution

The fourth proportional to 81,889.72, 113,006.48 and 46,079.72 is: 63,589.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,889.72 : 113,006.48 = 46,079.72 : x
  2. Step 2: Convert to fraction form
    81,889.72/113,006.48 = 46,079.72/x
  3. Step 3: Cross multiply
    81,889.72x = 113,006.48 × 46,079.72
  4. Step 4: Simplify right side
    81,889.72x = 5,207,306,956.59
  5. Step 5: Solve for x
    x = 5,207,306,956.59/81,889.72
  6. Step 6: Final answer
    x = 63,589.26

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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.