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Finding the Fourth Proportional to 48,868.20, 73,287.90 and 19,276.20

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Solution

The fourth proportional to 48,868.20, 73,287.90 and 19,276.20 is: 28,908.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,868.20 : 73,287.90 = 19,276.20 : x
  2. Step 2: Convert to fraction form
    48,868.20/73,287.90 = 19,276.20/x
  3. Step 3: Cross multiply
    48,868.20x = 73,287.90 × 19,276.20
  4. Step 4: Simplify right side
    48,868.20x = 1,412,712,217.98
  5. Step 5: Solve for x
    x = 1,412,712,217.98/48,868.20
  6. Step 6: Final answer
    x = 28,908.62

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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.