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Finding the Fourth Proportional to 61,222.80, 91,828.80 and 16,845.60

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Solution

The fourth proportional to 61,222.80, 91,828.80 and 16,845.60 is: 25,266.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,222.80 : 91,828.80 = 16,845.60 : x
  2. Step 2: Convert to fraction form
    61,222.80/91,828.80 = 16,845.60/x
  3. Step 3: Cross multiply
    61,222.80x = 91,828.80 × 16,845.60
  4. Step 4: Simplify right side
    61,222.80x = 1,546,911,233.28
  5. Step 5: Solve for x
    x = 1,546,911,233.28/61,222.80
  6. Step 6: Final answer
    x = 25,266.91

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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.