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Finding the Fourth Proportional to 48,911.40, 73,367.10 and 45,606.60

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Solution

The fourth proportional to 48,911.40, 73,367.10 and 45,606.60 is: 68,409.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,911.40 : 73,367.10 = 45,606.60 : x
  2. Step 2: Convert to fraction form
    48,911.40/73,367.10 = 45,606.60/x
  3. Step 3: Cross multiply
    48,911.40x = 73,367.10 × 45,606.60
  4. Step 4: Simplify right side
    48,911.40x = 3,346,023,982.86
  5. Step 5: Solve for x
    x = 3,346,023,982.86/48,911.40
  6. Step 6: Final answer
    x = 68,409.90

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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.