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Finding the Fourth Proportional to 1,128.52, 1,555.32 and 1,096.96

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Solution

The fourth proportional to 1,128.52, 1,555.32 and 1,096.96 is: 1,511.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128.52 : 1,555.32 = 1,096.96 : x
  2. Step 2: Convert to fraction form
    1,128.52/1,555.32 = 1,096.96/x
  3. Step 3: Cross multiply
    1,128.52x = 1,555.32 × 1,096.96
  4. Step 4: Simplify right side
    1,128.52x = 1,706,123.83
  5. Step 5: Solve for x
    x = 1,706,123.83/1,128.52
  6. Step 6: Final answer
    x = 1,511.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.