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Finding the Fourth Proportional to 74,879.80, 103,321.92 and 44,248.64

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Solution

The fourth proportional to 74,879.80, 103,321.92 and 44,248.64 is: 61,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,879.80 : 103,321.92 = 44,248.64 : x
  2. Step 2: Convert to fraction form
    74,879.80/103,321.92 = 44,248.64/x
  3. Step 3: Cross multiply
    74,879.80x = 103,321.92 × 44,248.64
  4. Step 4: Simplify right side
    74,879.80x = 4,571,854,442.19
  5. Step 5: Solve for x
    x = 4,571,854,442.19/74,879.80
  6. Step 6: Final answer
    x = 61,055.91

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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.