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Finding the Fourth Proportional to 221,907.90, 332,872.65 and 61,983.66

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Solution

The fourth proportional to 221,907.90, 332,872.65 and 61,983.66 is: 92,978.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,907.90 : 332,872.65 = 61,983.66 : x
  2. Step 2: Convert to fraction form
    221,907.90/332,872.65 = 61,983.66/x
  3. Step 3: Cross multiply
    221,907.90x = 332,872.65 × 61,983.66
  4. Step 4: Simplify right side
    221,907.90x = 20,632,665,160.90
  5. Step 5: Solve for x
    x = 20,632,665,160.90/221,907.90
  6. Step 6: Final answer
    x = 92,978.51

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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.