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Finding the Fourth Proportional to 52,606.60, 78,920.41 and 18,863.60

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Solution

The fourth proportional to 52,606.60, 78,920.41 and 18,863.60 is: 28,299.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,606.60 : 78,920.41 = 18,863.60 : x
  2. Step 2: Convert to fraction form
    52,606.60/78,920.41 = 18,863.60/x
  3. Step 3: Cross multiply
    52,606.60x = 78,920.41 × 18,863.60
  4. Step 4: Simplify right side
    52,606.60x = 1,488,723,046.08
  5. Step 5: Solve for x
    x = 1,488,723,046.08/52,606.60
  6. Step 6: Final answer
    x = 28,299.17

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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.