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Finding the Fourth Proportional to 541.41, 812.19 and 156.61

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Solution

The fourth proportional to 541.41, 812.19 and 156.61 is: 234.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.41 : 812.19 = 156.61 : x
  2. Step 2: Convert to fraction form
    541.41/812.19 = 156.61/x
  3. Step 3: Cross multiply
    541.41x = 812.19 × 156.61
  4. Step 4: Simplify right side
    541.41x = 127,192.62
  5. Step 5: Solve for x
    x = 127,192.62/541.41
  6. Step 6: Final answer
    x = 234.93

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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.