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Finding the Fourth Proportional to 242,362.21, 363,709.42 and 84,590.67

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Solution

The fourth proportional to 242,362.21, 363,709.42 and 84,590.67 is: 126,943.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,362.21 : 363,709.42 = 84,590.67 : x
  2. Step 2: Convert to fraction form
    242,362.21/363,709.42 = 84,590.67/x
  3. Step 3: Cross multiply
    242,362.21x = 363,709.42 × 84,590.67
  4. Step 4: Simplify right side
    242,362.21x = 30,766,422,082.57
  5. Step 5: Solve for x
    x = 30,766,422,082.57/242,362.21
  6. Step 6: Final answer
    x = 126,943.97

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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.