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Finding the Fourth Proportional to 352,390.50, 486,299.14 and 191,245.51

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Solution

The fourth proportional to 352,390.50, 486,299.14 and 191,245.51 is: 263,918.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,390.50 : 486,299.14 = 191,245.51 : x
  2. Step 2: Convert to fraction form
    352,390.50/486,299.14 = 191,245.51/x
  3. Step 3: Cross multiply
    352,390.50x = 486,299.14 × 191,245.51
  4. Step 4: Simplify right side
    352,390.50x = 93,002,527,041.86
  5. Step 5: Solve for x
    x = 93,002,527,041.86/352,390.50
  6. Step 6: Final answer
    x = 263,918.94

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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.