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Finding the Fourth Proportional to 1,096.40, 1,512.60 and 1,022.96

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Solution

The fourth proportional to 1,096.40, 1,512.60 and 1,022.96 is: 1,411.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,096.40 : 1,512.60 = 1,022.96 : x
  2. Step 2: Convert to fraction form
    1,096.40/1,512.60 = 1,022.96/x
  3. Step 3: Cross multiply
    1,096.40x = 1,512.60 × 1,022.96
  4. Step 4: Simplify right side
    1,096.40x = 1,547,329.30
  5. Step 5: Solve for x
    x = 1,547,329.30/1,096.40
  6. Step 6: Final answer
    x = 1,411.28

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Why These Related Problems?

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