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Finding the Fourth Proportional to 73,115.50, 109,673.80 and 17,711.50

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Solution

The fourth proportional to 73,115.50, 109,673.80 and 17,711.50 is: 26,567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,115.50 : 109,673.80 = 17,711.50 : x
  2. Step 2: Convert to fraction form
    73,115.50/109,673.80 = 17,711.50/x
  3. Step 3: Cross multiply
    73,115.50x = 109,673.80 × 17,711.50
  4. Step 4: Simplify right side
    73,115.50x = 1,942,487,508.70
  5. Step 5: Solve for x
    x = 1,942,487,508.70/73,115.50
  6. Step 6: Final answer
    x = 26,567.38

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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.