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Finding the Fourth Proportional to 625,558.59, 863,271.25 and 339,078.69

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Solution

The fourth proportional to 625,558.59, 863,271.25 and 339,078.69 is: 467,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,558.59 : 863,271.25 = 339,078.69 : x
  2. Step 2: Convert to fraction form
    625,558.59/863,271.25 = 339,078.69/x
  3. Step 3: Cross multiply
    625,558.59x = 863,271.25 × 339,078.69
  4. Step 4: Simplify right side
    625,558.59x = 292,716,883,716.97
  5. Step 5: Solve for x
    x = 292,716,883,716.97/625,558.59
  6. Step 6: Final answer
    x = 467,928.81

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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.