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Finding the Fourth Proportional to 71,950.59, 107,917.58 and 19,355.94

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Solution

The fourth proportional to 71,950.59, 107,917.58 and 19,355.94 is: 29,031.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,950.59 : 107,917.58 = 19,355.94 : x
  2. Step 2: Convert to fraction form
    71,950.59/107,917.58 = 19,355.94/x
  3. Step 3: Cross multiply
    71,950.59x = 107,917.58 × 19,355.94
  4. Step 4: Simplify right side
    71,950.59x = 2,088,846,251.82
  5. Step 5: Solve for x
    x = 2,088,846,251.82/71,950.59
  6. Step 6: Final answer
    x = 29,031.68

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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.