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Finding the Fourth Proportional to 48,617.30, 72,942.15 and 43,391.30

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Solution

The fourth proportional to 48,617.30, 72,942.15 and 43,391.30 is: 65,101.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,617.30 : 72,942.15 = 43,391.30 : x
  2. Step 2: Convert to fraction form
    48,617.30/72,942.15 = 43,391.30/x
  3. Step 3: Cross multiply
    48,617.30x = 72,942.15 × 43,391.30
  4. Step 4: Simplify right side
    48,617.30x = 3,165,054,713.30
  5. Step 5: Solve for x
    x = 3,165,054,713.30/48,617.30
  6. Step 6: Final answer
    x = 65,101.41

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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.