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Finding the Fourth Proportional to 48,872.70, 73,199.70 and 42,311.70

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Solution

The fourth proportional to 48,872.70, 73,199.70 and 42,311.70 is: 63,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,872.70 : 73,199.70 = 42,311.70 : x
  2. Step 2: Convert to fraction form
    48,872.70/73,199.70 = 42,311.70/x
  3. Step 3: Cross multiply
    48,872.70x = 73,199.70 × 42,311.70
  4. Step 4: Simplify right side
    48,872.70x = 3,097,203,746.49
  5. Step 5: Solve for x
    x = 3,097,203,746.49/48,872.70
  6. Step 6: Final answer
    x = 63,372.88

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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.