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Finding the Fourth Proportional to 217,183.38, 299,710.17 and 121,691.94

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Solution

The fourth proportional to 217,183.38, 299,710.17 and 121,691.94 is: 167,933.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,183.38 : 299,710.17 = 121,691.94 : x
  2. Step 2: Convert to fraction form
    217,183.38/299,710.17 = 121,691.94/x
  3. Step 3: Cross multiply
    217,183.38x = 299,710.17 × 121,691.94
  4. Step 4: Simplify right side
    217,183.38x = 36,472,312,025.03
  5. Step 5: Solve for x
    x = 36,472,312,025.03/217,183.38
  6. Step 6: Final answer
    x = 167,933.26

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1.5x scale

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.