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Finding the Fourth Proportional to 625,808.30, 863,632.43 and 353,916.85

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Solution

The fourth proportional to 625,808.30, 863,632.43 and 353,916.85 is: 488,414.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,808.30 : 863,632.43 = 353,916.85 : x
  2. Step 2: Convert to fraction form
    625,808.30/863,632.43 = 353,916.85/x
  3. Step 3: Cross multiply
    625,808.30x = 863,632.43 × 353,916.85
  4. Step 4: Simplify right side
    625,808.30x = 305,654,063,095.70
  5. Step 5: Solve for x
    x = 305,654,063,095.70/625,808.30
  6. Step 6: Final answer
    x = 488,414.85

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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.