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Finding the Fourth Proportional to 48,694.56, 73,059.60 and 20,621.76

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Solution

The fourth proportional to 48,694.56, 73,059.60 and 20,621.76 is: 30,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,694.56 : 73,059.60 = 20,621.76 : x
  2. Step 2: Convert to fraction form
    48,694.56/73,059.60 = 20,621.76/x
  3. Step 3: Cross multiply
    48,694.56x = 73,059.60 × 20,621.76
  4. Step 4: Simplify right side
    48,694.56x = 1,506,617,536.90
  5. Step 5: Solve for x
    x = 1,506,617,536.90/48,694.56
  6. Step 6: Final answer
    x = 30,940.16

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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.