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Finding the Fourth Proportional to 625,935.28, 863,780.50 and 353,993.01

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Solution

The fourth proportional to 625,935.28, 863,780.50 and 353,993.01 is: 488,504.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,935.28 : 863,780.50 = 353,993.01 : x
  2. Step 2: Convert to fraction form
    625,935.28/863,780.50 = 353,993.01/x
  3. Step 3: Cross multiply
    625,935.28x = 863,780.50 × 353,993.01
  4. Step 4: Simplify right side
    625,935.28x = 305,772,259,174.31
  5. Step 5: Solve for x
    x = 305,772,259,174.31/625,935.28
  6. Step 6: Final answer
    x = 488,504.59

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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.