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Finding the Fourth Proportional to 61,391.60, 92,074.08 and 21,951.44

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Solution

The fourth proportional to 61,391.60, 92,074.08 and 21,951.44 is: 32,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,391.60 : 92,074.08 = 21,951.44 : x
  2. Step 2: Convert to fraction form
    61,391.60/92,074.08 = 21,951.44/x
  3. Step 3: Cross multiply
    61,391.60x = 92,074.08 × 21,951.44
  4. Step 4: Simplify right side
    61,391.60x = 2,021,158,642.68
  5. Step 5: Solve for x
    x = 2,021,158,642.68/61,391.60
  6. Step 6: Final answer
    x = 32,922.40

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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.