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Finding the Fourth Proportional to 7,881.96, 11,824.54 and 2,951.48

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Solution

The fourth proportional to 7,881.96, 11,824.54 and 2,951.48 is: 4,427.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.96 : 11,824.54 = 2,951.48 : x
  2. Step 2: Convert to fraction form
    7,881.96/11,824.54 = 2,951.48/x
  3. Step 3: Cross multiply
    7,881.96x = 11,824.54 × 2,951.48
  4. Step 4: Simplify right side
    7,881.96x = 34,899,893.32
  5. Step 5: Solve for x
    x = 34,899,893.32/7,881.96
  6. Step 6: Final answer
    x = 4,427.82

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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.