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Finding the Fourth Proportional to 48,919.20, 73,535.40 and 45,452.40

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Solution

The fourth proportional to 48,919.20, 73,535.40 and 45,452.40 is: 68,324.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,919.20 : 73,535.40 = 45,452.40 : x
  2. Step 2: Convert to fraction form
    48,919.20/73,535.40 = 45,452.40/x
  3. Step 3: Cross multiply
    48,919.20x = 73,535.40 × 45,452.40
  4. Step 4: Simplify right side
    48,919.20x = 3,342,360,414.96
  5. Step 5: Solve for x
    x = 3,342,360,414.96/48,919.20
  6. Step 6: Final answer
    x = 68,324.10

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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.