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Finding the Fourth Proportional to 7,893.63, 10,890.68 and 5,241.57

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Solution

The fourth proportional to 7,893.63, 10,890.68 and 5,241.57 is: 7,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.63 : 10,890.68 = 5,241.57 : x
  2. Step 2: Convert to fraction form
    7,893.63/10,890.68 = 5,241.57/x
  3. Step 3: Cross multiply
    7,893.63x = 10,890.68 × 5,241.57
  4. Step 4: Simplify right side
    7,893.63x = 57,084,235.36
  5. Step 5: Solve for x
    x = 57,084,235.36/7,893.63
  6. Step 6: Final answer
    x = 7,231.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.