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Finding the Fourth Proportional to 276,202.69, 381,212.11 and 172,884.82

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Solution

The fourth proportional to 276,202.69, 381,212.11 and 172,884.82 is: 238,613.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,202.69 : 381,212.11 = 172,884.82 : x
  2. Step 2: Convert to fraction form
    276,202.69/381,212.11 = 172,884.82/x
  3. Step 3: Cross multiply
    276,202.69x = 381,212.11 × 172,884.82
  4. Step 4: Simplify right side
    276,202.69x = 65,905,787,019.17
  5. Step 5: Solve for x
    x = 65,905,787,019.17/276,202.69
  6. Step 6: Final answer
    x = 238,613.85

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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.