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Finding the Fourth Proportional to 1,125.69, 1,553.64 and 1,096.08

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Solution

The fourth proportional to 1,125.69, 1,553.64 and 1,096.08 is: 1,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.69 : 1,553.64 = 1,096.08 : x
  2. Step 2: Convert to fraction form
    1,125.69/1,553.64 = 1,096.08/x
  3. Step 3: Cross multiply
    1,125.69x = 1,553.64 × 1,096.08
  4. Step 4: Simplify right side
    1,125.69x = 1,702,913.73
  5. Step 5: Solve for x
    x = 1,702,913.73/1,125.69
  6. Step 6: Final answer
    x = 1,512.77

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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.