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Finding the Fourth Proportional to 48,868.40, 73,205.40 and 45,369.20

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Solution

The fourth proportional to 48,868.40, 73,205.40 and 45,369.20 is: 67,963.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,868.40 : 73,205.40 = 45,369.20 : x
  2. Step 2: Convert to fraction form
    48,868.40/73,205.40 = 45,369.20/x
  3. Step 3: Cross multiply
    48,868.40x = 73,205.40 × 45,369.20
  4. Step 4: Simplify right side
    48,868.40x = 3,321,270,433.68
  5. Step 5: Solve for x
    x = 3,321,270,433.68/48,868.40
  6. Step 6: Final answer
    x = 67,963.56

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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.