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Finding the Fourth Proportional to 48,879.20, 73,335.48 and 20,798.16

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Solution

The fourth proportional to 48,879.20, 73,335.48 and 20,798.16 is: 31,204.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,879.20 : 73,335.48 = 20,798.16 : x
  2. Step 2: Convert to fraction form
    48,879.20/73,335.48 = 20,798.16/x
  3. Step 3: Cross multiply
    48,879.20x = 73,335.48 × 20,798.16
  4. Step 4: Simplify right side
    48,879.20x = 1,525,243,046.72
  5. Step 5: Solve for x
    x = 1,525,243,046.72/48,879.20
  6. Step 6: Final answer
    x = 31,204.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.