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Finding the Fourth Proportional to 527.36, 791.64 and 411.93

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Solution

The fourth proportional to 527.36, 791.64 and 411.93 is: 618.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.36 : 791.64 = 411.93 : x
  2. Step 2: Convert to fraction form
    527.36/791.64 = 411.93/x
  3. Step 3: Cross multiply
    527.36x = 791.64 × 411.93
  4. Step 4: Simplify right side
    527.36x = 326,100.27
  5. Step 5: Solve for x
    x = 326,100.27/527.36
  6. Step 6: Final answer
    x = 618.37

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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.