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Finding the Fourth Proportional to 62,992.76, 94,488.95 and 20,872.96

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Solution

The fourth proportional to 62,992.76, 94,488.95 and 20,872.96 is: 31,309.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,992.76 : 94,488.95 = 20,872.96 : x
  2. Step 2: Convert to fraction form
    62,992.76/94,488.95 = 20,872.96/x
  3. Step 3: Cross multiply
    62,992.76x = 94,488.95 × 20,872.96
  4. Step 4: Simplify right side
    62,992.76x = 1,972,263,889.75
  5. Step 5: Solve for x
    x = 1,972,263,889.75/62,992.76
  6. Step 6: Final answer
    x = 31,309.38

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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.