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Finding the Fourth Proportional to 695.97, 960.66 and 474.84

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Solution

The fourth proportional to 695.97, 960.66 and 474.84 is: 655.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.97 : 960.66 = 474.84 : x
  2. Step 2: Convert to fraction form
    695.97/960.66 = 474.84/x
  3. Step 3: Cross multiply
    695.97x = 960.66 × 474.84
  4. Step 4: Simplify right side
    695.97x = 456,159.79
  5. Step 5: Solve for x
    x = 456,159.79/695.97
  6. Step 6: Final answer
    x = 655.43

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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.