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Finding the Fourth Proportional to 625,868.65, 863,704.14 and 339,388.75

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Solution

The fourth proportional to 625,868.65, 863,704.14 and 339,388.75 is: 468,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,868.65 : 863,704.14 = 339,388.75 : x
  2. Step 2: Convert to fraction form
    625,868.65/863,704.14 = 339,388.75/x
  3. Step 3: Cross multiply
    625,868.65x = 863,704.14 × 339,388.75
  4. Step 4: Simplify right side
    625,868.65x = 293,131,468,444.43
  5. Step 5: Solve for x
    x = 293,131,468,444.43/625,868.65
  6. Step 6: Final answer
    x = 468,359.40

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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.