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Finding the Fourth Proportional to 1,174.76, 1,761.78 and 444.68

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Solution

The fourth proportional to 1,174.76, 1,761.78 and 444.68 is: 666.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.76 : 1,761.78 = 444.68 : x
  2. Step 2: Convert to fraction form
    1,174.76/1,761.78 = 444.68/x
  3. Step 3: Cross multiply
    1,174.76x = 1,761.78 × 444.68
  4. Step 4: Simplify right side
    1,174.76x = 783,428.33
  5. Step 5: Solve for x
    x = 783,428.33/1,174.76
  6. Step 6: Final answer
    x = 666.88

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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.