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Finding the Fourth Proportional to 69,327.69, 103,983.49 and 19,411.77

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Solution

The fourth proportional to 69,327.69, 103,983.49 and 19,411.77 is: 29,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,327.69 : 103,983.49 = 19,411.77 : x
  2. Step 2: Convert to fraction form
    69,327.69/103,983.49 = 19,411.77/x
  3. Step 3: Cross multiply
    69,327.69x = 103,983.49 × 19,411.77
  4. Step 4: Simplify right side
    69,327.69x = 2,018,503,591.68
  5. Step 5: Solve for x
    x = 2,018,503,591.68/69,327.69
  6. Step 6: Final answer
    x = 29,115.40

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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.