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Finding the Fourth Proportional to 328.56, 492.52 and 112

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Solution

The fourth proportional to 328.56, 492.52 and 112 is: 167.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.56 : 492.52 = 112 : x
  2. Step 2: Convert to fraction form
    328.56/492.52 = 112/x
  3. Step 3: Cross multiply
    328.56x = 492.52 × 112
  4. Step 4: Simplify right side
    328.56x = 55,162.24
  5. Step 5: Solve for x
    x = 55,162.24/328.56
  6. Step 6: Final answer
    x = 167.89

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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.