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Finding the Fourth Proportional to 353,576.34, 487,986.78 and 198,545.04

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Solution

The fourth proportional to 353,576.34, 487,986.78 and 198,545.04 is: 274,021.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,576.34 : 487,986.78 = 198,545.04 : x
  2. Step 2: Convert to fraction form
    353,576.34/487,986.78 = 198,545.04/x
  3. Step 3: Cross multiply
    353,576.34x = 487,986.78 × 198,545.04
  4. Step 4: Simplify right side
    353,576.34x = 96,887,354,754.57
  5. Step 5: Solve for x
    x = 96,887,354,754.57/353,576.34
  6. Step 6: Final answer
    x = 274,021.04

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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.