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Finding the Fourth Proportional to 5,191.63, 7,785.82 and 1,492.86

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Solution

The fourth proportional to 5,191.63, 7,785.82 and 1,492.86 is: 2,238.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.63 : 7,785.82 = 1,492.86 : x
  2. Step 2: Convert to fraction form
    5,191.63/7,785.82 = 1,492.86/x
  3. Step 3: Cross multiply
    5,191.63x = 7,785.82 × 1,492.86
  4. Step 4: Simplify right side
    5,191.63x = 11,623,170.31
  5. Step 5: Solve for x
    x = 11,623,170.31/5,191.63
  6. Step 6: Final answer
    x = 2,238.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.