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Finding the Fourth Proportional to 79,878.64, 110,234.52 and 49,258.48

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Solution

The fourth proportional to 79,878.64, 110,234.52 and 49,258.48 is: 67,977.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,878.64 : 110,234.52 = 49,258.48 : x
  2. Step 2: Convert to fraction form
    79,878.64/110,234.52 = 49,258.48/x
  3. Step 3: Cross multiply
    79,878.64x = 110,234.52 × 49,258.48
  4. Step 4: Simplify right side
    79,878.64x = 5,429,984,898.73
  5. Step 5: Solve for x
    x = 5,429,984,898.73/79,878.64
  6. Step 6: Final answer
    x = 67,977.93

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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.