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Finding the Fourth Proportional to 353,189.85, 487,399.37 and 192,045

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Solution

The fourth proportional to 353,189.85, 487,399.37 and 192,045 is: 265,020.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,189.85 : 487,399.37 = 192,045 : x
  2. Step 2: Convert to fraction form
    353,189.85/487,399.37 = 192,045/x
  3. Step 3: Cross multiply
    353,189.85x = 487,399.37 × 192,045
  4. Step 4: Simplify right side
    353,189.85x = 93,602,612,011.65
  5. Step 5: Solve for x
    x = 93,602,612,011.65/353,189.85
  6. Step 6: Final answer
    x = 265,020.67

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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.