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Finding the Fourth Proportional to 625,249.44, 863,040.42 and 398,894.76

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Solution

The fourth proportional to 625,249.44, 863,040.42 and 398,894.76 is: 550,599.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,249.44 : 863,040.42 = 398,894.76 : x
  2. Step 2: Convert to fraction form
    625,249.44/863,040.42 = 398,894.76/x
  3. Step 3: Cross multiply
    625,249.44x = 863,040.42 × 398,894.76
  4. Step 4: Simplify right side
    625,249.44x = 344,262,301,206.20
  5. Step 5: Solve for x
    x = 344,262,301,206.20/625,249.44
  6. Step 6: Final answer
    x = 550,599.94

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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.