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Finding the Fourth Proportional to 625,805.72, 863,628.88 and 353,914.27

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Solution

The fourth proportional to 625,805.72, 863,628.88 and 353,914.27 is: 488,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,805.72 : 863,628.88 = 353,914.27 : x
  2. Step 2: Convert to fraction form
    625,805.72/863,628.88 = 353,914.27/x
  3. Step 3: Cross multiply
    625,805.72x = 863,628.88 × 353,914.27
  4. Step 4: Simplify right side
    625,805.72x = 305,650,585,005.62
  5. Step 5: Solve for x
    x = 305,650,585,005.62/625,805.72
  6. Step 6: Final answer
    x = 488,411.30

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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.