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Finding the Fourth Proportional to 1,767.18, 2,651.20 and 793.96

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Solution

The fourth proportional to 1,767.18, 2,651.20 and 793.96 is: 1,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.18 : 2,651.20 = 793.96 : x
  2. Step 2: Convert to fraction form
    1,767.18/2,651.20 = 793.96/x
  3. Step 3: Cross multiply
    1,767.18x = 2,651.20 × 793.96
  4. Step 4: Simplify right side
    1,767.18x = 2,104,946.75
  5. Step 5: Solve for x
    x = 2,104,946.75/1,767.18
  6. Step 6: Final answer
    x = 1,191.13

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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.