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Finding the Fourth Proportional to 48,957.70, 73,440.43 and 20,877.99

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Solution

The fourth proportional to 48,957.70, 73,440.43 and 20,877.99 is: 31,318.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,957.70 : 73,440.43 = 20,877.99 : x
  2. Step 2: Convert to fraction form
    48,957.70/73,440.43 = 20,877.99/x
  3. Step 3: Cross multiply
    48,957.70x = 73,440.43 × 20,877.99
  4. Step 4: Simplify right side
    48,957.70x = 1,533,288,563.14
  5. Step 5: Solve for x
    x = 1,533,288,563.14/48,957.70
  6. Step 6: Final answer
    x = 31,318.64

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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.