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Finding the Fourth Proportional to 625,738.20, 863,513.58 and 353,859.54

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Solution

The fourth proportional to 625,738.20, 863,513.58 and 353,859.54 is: 488,323.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,738.20 : 863,513.58 = 353,859.54 : x
  2. Step 2: Convert to fraction form
    625,738.20/863,513.58 = 353,859.54/x
  3. Step 3: Cross multiply
    625,738.20x = 863,513.58 × 353,859.54
  4. Step 4: Simplify right side
    625,738.20x = 305,562,518,202.55
  5. Step 5: Solve for x
    x = 305,562,518,202.55/625,738.20
  6. Step 6: Final answer
    x = 488,323.26

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1.5x scale

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.