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Finding the Fourth Proportional to 352,400.61, 486,312.83 and 191,255.67

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Solution

The fourth proportional to 352,400.61, 486,312.83 and 191,255.67 is: 263,932.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,400.61 : 486,312.83 = 191,255.67 : x
  2. Step 2: Convert to fraction form
    352,400.61/486,312.83 = 191,255.67/x
  3. Step 3: Cross multiply
    352,400.61x = 486,312.83 × 191,255.67
  4. Step 4: Simplify right side
    352,400.61x = 93,010,082,743.40
  5. Step 5: Solve for x
    x = 93,010,082,743.40/352,400.61
  6. Step 6: Final answer
    x = 263,932.81

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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.