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Finding the Fourth Proportional to 1,141.65, 1,712.43 and 793.98

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Solution

The fourth proportional to 1,141.65, 1,712.43 and 793.98 is: 1,190.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,141.65 : 1,712.43 = 793.98 : x
  2. Step 2: Convert to fraction form
    1,141.65/1,712.43 = 793.98/x
  3. Step 3: Cross multiply
    1,141.65x = 1,712.43 × 793.98
  4. Step 4: Simplify right side
    1,141.65x = 1,359,635.17
  5. Step 5: Solve for x
    x = 1,359,635.17/1,141.65
  6. Step 6: Final answer
    x = 1,190.94

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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.