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Finding the Fourth Proportional to 625,738.88, 863,454.86 and 384,031.64

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Solution

The fourth proportional to 625,738.88, 863,454.86 and 384,031.64 is: 529,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,738.88 : 863,454.86 = 384,031.64 : x
  2. Step 2: Convert to fraction form
    625,738.88/863,454.86 = 384,031.64/x
  3. Step 3: Cross multiply
    625,738.88x = 863,454.86 × 384,031.64
  4. Step 4: Simplify right side
    625,738.88x = 331,593,985,951.77
  5. Step 5: Solve for x
    x = 331,593,985,951.77/625,738.88
  6. Step 6: Final answer
    x = 529,923.90

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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.