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Finding the Fourth Proportional to 61,392.90, 92,033.46 and 21,940.77

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Solution

The fourth proportional to 61,392.90, 92,033.46 and 21,940.77 is: 32,891.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,392.90 : 92,033.46 = 21,940.77 : x
  2. Step 2: Convert to fraction form
    61,392.90/92,033.46 = 21,940.77/x
  3. Step 3: Cross multiply
    61,392.90x = 92,033.46 × 21,940.77
  4. Step 4: Simplify right side
    61,392.90x = 2,019,284,978.16
  5. Step 5: Solve for x
    x = 2,019,284,978.16/61,392.90
  6. Step 6: Final answer
    x = 32,891.18

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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.