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Finding the Fourth Proportional to 935.92, 1,401.60 and 704.56

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Solution

The fourth proportional to 935.92, 1,401.60 and 704.56 is: 1,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.92 : 1,401.60 = 704.56 : x
  2. Step 2: Convert to fraction form
    935.92/1,401.60 = 704.56/x
  3. Step 3: Cross multiply
    935.92x = 1,401.60 × 704.56
  4. Step 4: Simplify right side
    935.92x = 987,511.30
  5. Step 5: Solve for x
    x = 987,511.30/935.92
  6. Step 6: Final answer
    x = 1,055.12

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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.