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Finding the Fourth Proportional to 48,693.36, 73,038.48 and 20,605.80

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Solution

The fourth proportional to 48,693.36, 73,038.48 and 20,605.80 is: 30,908.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,693.36 : 73,038.48 = 20,605.80 : x
  2. Step 2: Convert to fraction form
    48,693.36/73,038.48 = 20,605.80/x
  3. Step 3: Cross multiply
    48,693.36x = 73,038.48 × 20,605.80
  4. Step 4: Simplify right side
    48,693.36x = 1,505,016,311.18
  5. Step 5: Solve for x
    x = 1,505,016,311.18/48,693.36
  6. Step 6: Final answer
    x = 30,908.04

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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.