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Finding the Fourth Proportional to 625,786.88, 863,585.91 and 339,306.89

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Solution

The fourth proportional to 625,786.88, 863,585.91 and 339,306.89 is: 468,243.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,786.88 : 863,585.91 = 339,306.89 : x
  2. Step 2: Convert to fraction form
    625,786.88/863,585.91 = 339,306.89/x
  3. Step 3: Cross multiply
    625,786.88x = 863,585.91 × 339,306.89
  4. Step 4: Simplify right side
    625,786.88x = 293,020,645,051.99
  5. Step 5: Solve for x
    x = 293,020,645,051.99/625,786.88
  6. Step 6: Final answer
    x = 468,243.51

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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.