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Finding the Fourth Proportional to 625,906.64, 863,751.60 and 339,426.64

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Solution

The fourth proportional to 625,906.64, 863,751.60 and 339,426.64 is: 468,409.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,906.64 : 863,751.60 = 339,426.64 : x
  2. Step 2: Convert to fraction form
    625,906.64/863,751.60 = 339,426.64/x
  3. Step 3: Cross multiply
    625,906.64x = 863,751.60 × 339,426.64
  4. Step 4: Simplify right side
    625,906.64x = 293,180,303,382.62
  5. Step 5: Solve for x
    x = 293,180,303,382.62/625,906.64
  6. Step 6: Final answer
    x = 468,409.00

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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.