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Finding the Fourth Proportional to 71,941.86, 107,908.94 and 22,021.98

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Solution

The fourth proportional to 71,941.86, 107,908.94 and 22,021.98 is: 33,031.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,941.86 : 107,908.94 = 22,021.98 : x
  2. Step 2: Convert to fraction form
    71,941.86/107,908.94 = 22,021.98/x
  3. Step 3: Cross multiply
    71,941.86x = 107,908.94 × 22,021.98
  4. Step 4: Simplify right side
    71,941.86x = 2,376,368,518.50
  5. Step 5: Solve for x
    x = 2,376,368,518.50/71,941.86
  6. Step 6: Final answer
    x = 33,031.79

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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.