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Finding the Fourth Proportional to 7,893.59, 11,839.53 and 4,191.89

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Solution

The fourth proportional to 7,893.59, 11,839.53 and 4,191.89 is: 6,287.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.59 : 11,839.53 = 4,191.89 : x
  2. Step 2: Convert to fraction form
    7,893.59/11,839.53 = 4,191.89/x
  3. Step 3: Cross multiply
    7,893.59x = 11,839.53 × 4,191.89
  4. Step 4: Simplify right side
    7,893.59x = 49,629,963.93
  5. Step 5: Solve for x
    x = 49,629,963.93/7,893.59
  6. Step 6: Final answer
    x = 6,287.38

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1.5x scale

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.