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Finding the Fourth Proportional to 1,174.61, 1,761.40 and 352.73

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Solution

The fourth proportional to 1,174.61, 1,761.40 and 352.73 is: 528.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.61 : 1,761.40 = 352.73 : x
  2. Step 2: Convert to fraction form
    1,174.61/1,761.40 = 352.73/x
  3. Step 3: Cross multiply
    1,174.61x = 1,761.40 × 352.73
  4. Step 4: Simplify right side
    1,174.61x = 621,298.62
  5. Step 5: Solve for x
    x = 621,298.62/1,174.61
  6. Step 6: Final answer
    x = 528.94

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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.