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Finding the Fourth Proportional to 625,379.66, 862,777.39 and 407,841.76

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Solution

The fourth proportional to 625,379.66, 862,777.39 and 407,841.76 is: 562,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,379.66 : 862,777.39 = 407,841.76 : x
  2. Step 2: Convert to fraction form
    625,379.66/862,777.39 = 407,841.76/x
  3. Step 3: Cross multiply
    625,379.66x = 862,777.39 × 407,841.76
  4. Step 4: Simplify right side
    625,379.66x = 351,876,647,043.65
  5. Step 5: Solve for x
    x = 351,876,647,043.65/625,379.66
  6. Step 6: Final answer
    x = 562,660.85

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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.