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Finding the Fourth Proportional to 625,808.79, 863,633.12 and 353,917.35

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Solution

The fourth proportional to 625,808.79, 863,633.12 and 353,917.35 is: 488,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,808.79 : 863,633.12 = 353,917.35 : x
  2. Step 2: Convert to fraction form
    625,808.79/863,633.12 = 353,917.35/x
  3. Step 3: Cross multiply
    625,808.79x = 863,633.12 × 353,917.35
  4. Step 4: Simplify right side
    625,808.79x = 305,654,745,202.63
  5. Step 5: Solve for x
    x = 305,654,745,202.63/625,808.79
  6. Step 6: Final answer
    x = 488,415.55

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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.