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Finding the Fourth Proportional to 52,305.50, 78,491.68 and 19,022.40

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Solution

The fourth proportional to 52,305.50, 78,491.68 and 19,022.40 is: 28,545.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,305.50 : 78,491.68 = 19,022.40 : x
  2. Step 2: Convert to fraction form
    52,305.50/78,491.68 = 19,022.40/x
  3. Step 3: Cross multiply
    52,305.50x = 78,491.68 × 19,022.40
  4. Step 4: Simplify right side
    52,305.50x = 1,493,100,086.08
  5. Step 5: Solve for x
    x = 1,493,100,086.08/52,305.50
  6. Step 6: Final answer
    x = 28,545.76

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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.