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Finding the Fourth Proportional to 79,798.91, 110,121.31 and 43,988.15

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Solution

The fourth proportional to 79,798.91, 110,121.31 and 43,988.15 is: 60,702.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,798.91 : 110,121.31 = 43,988.15 : x
  2. Step 2: Convert to fraction form
    79,798.91/110,121.31 = 43,988.15/x
  3. Step 3: Cross multiply
    79,798.91x = 110,121.31 × 43,988.15
  4. Step 4: Simplify right side
    79,798.91x = 4,844,032,785.33
  5. Step 5: Solve for x
    x = 4,844,032,785.33/79,798.91
  6. Step 6: Final answer
    x = 60,702.99

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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.