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Finding the Fourth Proportional to 625,282.79, 862,906.23 and 383,698.87

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Solution

The fourth proportional to 625,282.79, 862,906.23 and 383,698.87 is: 529,514.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,282.79 : 862,906.23 = 383,698.87 : x
  2. Step 2: Convert to fraction form
    625,282.79/862,906.23 = 383,698.87/x
  3. Step 3: Cross multiply
    625,282.79x = 862,906.23 × 383,698.87
  4. Step 4: Simplify right side
    625,282.79x = 331,096,143,209.70
  5. Step 5: Solve for x
    x = 331,096,143,209.70/625,282.79
  6. Step 6: Final answer
    x = 529,514.25

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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.