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Finding the Fourth Proportional to 48,859.70, 73,446.15 and 45,392.90

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Solution

The fourth proportional to 48,859.70, 73,446.15 and 45,392.90 is: 68,234.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,859.70 : 73,446.15 = 45,392.90 : x
  2. Step 2: Convert to fraction form
    48,859.70/73,446.15 = 45,392.90/x
  3. Step 3: Cross multiply
    48,859.70x = 73,446.15 × 45,392.90
  4. Step 4: Simplify right side
    48,859.70x = 3,333,933,742.34
  5. Step 5: Solve for x
    x = 3,333,933,742.34/48,859.70
  6. Step 6: Final answer
    x = 68,234.84

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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.