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Finding the Fourth Proportional to 1,092.64, 1,631.72 and 960.16

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Solution

The fourth proportional to 1,092.64, 1,631.72 and 960.16 is: 1,433.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.64 : 1,631.72 = 960.16 : x
  2. Step 2: Convert to fraction form
    1,092.64/1,631.72 = 960.16/x
  3. Step 3: Cross multiply
    1,092.64x = 1,631.72 × 960.16
  4. Step 4: Simplify right side
    1,092.64x = 1,566,712.28
  5. Step 5: Solve for x
    x = 1,566,712.28/1,092.64
  6. Step 6: Final answer
    x = 1,433.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.