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Finding the Fourth Proportional to 79,718.31, 110,023.74 and 47,016.32

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Solution

The fourth proportional to 79,718.31, 110,023.74 and 47,016.32 is: 64,889.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,718.31 : 110,023.74 = 47,016.32 : x
  2. Step 2: Convert to fraction form
    79,718.31/110,023.74 = 47,016.32/x
  3. Step 3: Cross multiply
    79,718.31x = 110,023.74 × 47,016.32
  4. Step 4: Simplify right side
    79,718.31x = 5,172,910,817.32
  5. Step 5: Solve for x
    x = 5,172,910,817.32/79,718.31
  6. Step 6: Final answer
    x = 64,889.87

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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.