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Finding the Fourth Proportional to 79,814.50, 110,029.52 and 62,789.15

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Solution

The fourth proportional to 79,814.50, 110,029.52 and 62,789.15 is: 86,558.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,814.50 : 110,029.52 = 62,789.15 : x
  2. Step 2: Convert to fraction form
    79,814.50/110,029.52 = 62,789.15/x
  3. Step 3: Cross multiply
    79,814.50x = 110,029.52 × 62,789.15
  4. Step 4: Simplify right side
    79,814.50x = 6,908,660,467.75
  5. Step 5: Solve for x
    x = 6,908,660,467.75/79,814.50
  6. Step 6: Final answer
    x = 86,558.97

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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.